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Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2016	Mar. 09, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	ExlService Holdings, Inc.
Entity Central Index Key	0001297989
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2016
Trading Symbol	EXLS
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		33,796,135
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,693,584,602

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 213,155	$ 205,323
Short-term investments	13,491	13,676
Restricted cash	3,846	1,872
Accounts receivable, net	113,067	92,650
Prepaid expenses	7,855	8,027
Advance income tax, net	6,242	2,432
Other current assets	21,168	15,219
Total current assets	378,824	339,199
Property, plant and equipment, net	49,029	47,991
Restricted cash	3,393	3,319
Deferred income tax assets, net	14,799	13,749
Intangible assets, net	53,770	52,733
Goodwill	186,770	171,535
Other assets	19,943	22,257
Total assets	706,528	650,783
Current liabilities:
Accounts payable	3,288	6,401
Short-term borrowings	10,000	10,000
Deferred revenue	16,615	11,518
Accrued employee cost	50,832	44,526
Accrued expenses and other current liabilities	43,264	34,250
Current portion of capital lease obligations	232	384
Total current liabilities	124,231	107,079
Long term borrowings	35,000	60,000
Capital lease obligations, less current portion	300	278
Non-current liabilities	14,819	17,655
Total liabilities	174,350	185,012
Commitments and contingencies
Preferred stock, $0.001 par value; 15,000,000 shares authorized, none issued	0	0
ExlService Holdings, Inc stockholders’ equity:
Common stock, $0.001 par value; 100,000,000 shares authorized, 35,699,819 shares issued and 33,628,109 shares outstanding as of December 31, 2016 and 34,781,201 shares issued and 33,091,223 shares outstanding as of December 31, 2015	36	35
Additional paid-in-capital	284,646	254,052
Retained earnings	382,722	320,989
Accumulated other comprehensive loss	(75,057)	(67,325)
Total including shares held in treasury	592,347	507,751
Less: 2,071,710 shares as of December 31, 2016 and 1,689,978 shares as of December 31, 2015, held in treasury, at cost	(60,362)	(42,159)
ExlService Holdings, Inc. stockholders' equity	531,985	465,592
Non-controlling interest	193	179
Total equity	532,178	465,771
Total liabilities and equity	$ 706,528	$ 650,783

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock shares authorized (in shares)	15,000,000	15,000,000
Preferred stock shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock shares authorized (in shares)	100,000,000	100,000,000
Common stock shares issued (in shares)	35,699,819	34,781,201
Common stock shares outstanding (in shares)	33,628,109	33,091,223
Less shares held in treasury at cost (in shares)	2,071,710	1,689,978

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Revenues, net	$ 685,988	$ 628,492	$ 499,278
Cost of revenues (exclusive of depreciation and amortization)	447,956	402,917	332,535
Gross profit	238,032	225,575	166,743
Operating expenses:
General and administrative expenses	88,648	77,293	65,381
Selling and marketing expenses	50,582	49,474	39,294
Depreciation and amortization	34,580	31,465	28,028
Total operating expenses	173,810	158,232	132,703
Income from operations	64,222	67,343	34,040
Other income/(expense) :
Foreign exchange gain/(loss), net	5,597	2,744	(5)
Interest expense	(1,343)	(1,338)	(369)
Other income, net	15,408	7,027	3,972
Income before income tax expense	83,884	75,776	37,638
Income tax expense	22,151	24,211	5,193
Net income	$ 61,733	$ 51,565	$ 32,445
Earnings per share:
Basic (in dollars per share)	$ 1.84	$ 1.55	$ 0.99
Diluted (in dollars per share)	$ 1.79	$ 1.51	$ 0.96
Weighted-average number of shares used in computing earnings per share:
Basic (in shares)	33,566,367	33,298,104	32,804,606
Diluted (in shares)	34,563,319	34,178,340	33,636,593

Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Statement of Comprehensive Income [Abstract]

Net income

$ 61,733

$ 51,565

$ 32,445

Other comprehensive income/(loss):

Unrealized gain/(loss) on effective cash flow hedges, net of taxes $1,184, ($402) and $1,768, respectively

2,711

(709)

5,002

Foreign currency translation adjustment

(9,236)

(12,510)

(5,462)

Retirement benefits, net of taxes ($204), $22 and ($28), respectively

(439)

584

(34)

Reclassification adjustments

Realized (gain)/loss on cash flow hedges, net of taxes ($639), $456 and $1,571, respectively(1)

^[1]

(795)

661

5,569

Retirement benefits, net of taxes $63, $53 and $15, respectively(2)

^[2]

158

134

Total other comprehensive (loss)/income

(7,732)

(11,816)

5,209

Total comprehensive income

$ 54,001

$ 39,749

$ 37,654

[1]	These are reclassified to net income and are included in the foreign exchange gain/(loss) in the consolidated statements of income. See Note 12 to the consolidated financial statements.
[2]	These are reclassified to net income and are included in the computation of net periodic pension costs in the consolidated statements of income. See Note 15 to the consolidated financial statements.

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Unrealized gain/(loss) on effective cash flow hedges, tax	$ 1,184	$ (402)	$ 1,768
Retirement benefits, tax	(204)	22	(28)
Realized (gain)/loss on cash flow hedges, tax	(639)	456	1,571
Retirement benefits, tax	$ 63	$ 53	$ 15

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Treasury Stock	Non - Controlling Interest
Beginning balance at Dec. 31, 2013	$ 366,174	$ 33	$ 214,522	$ 236,979	$ (60,718)	$ (24,642)	$ 0
Beginning balance (in shares) at Dec. 31, 2013		33,342,312				(1,170,129)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued on exercise/vesting of equity awards	6,460	$ 1	6,459
Stock issued on exercise/vesting of equity awards (in shares)		861,040
Stock based compensation	11,011		11,011
Excess tax benefit from stock based compensation	1,181		1,181
Acquisition of treasury stock	(3,322)					$ (3,322)
Acquisition of treasury stock (in shares)						(127,756)
Non-controlling interest	0						0
Other comprehensive income	5,209				5,209
Net income	32,445			32,445
Ending balance at Dec. 31, 2014	419,158	$ 34	233,173	269,424	(55,509)	$ (27,964)	0
Ending balance (shares) at Dec. 31, 2014		34,203,352				(1,297,885)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued on exercise/vesting of equity awards	3,375	$ 1	3,374
Stock issued on exercise/vesting of equity awards (in shares)		577,849
Stock based compensation	16,047		16,047
Excess tax benefit from stock based compensation	1,458		1,458
Acquisition of treasury stock	(14,195)					$ (14,195)
Acquisition of treasury stock (in shares)						(392,093)
Non-controlling interest	179						179
Other comprehensive income	(11,816)				(11,816)
Net income	51,565			51,565
Ending balance at Dec. 31, 2015	$ 465,771	$ 35	254,052	320,989	(67,325)	$ (42,159)	179
Ending balance (shares) at Dec. 31, 2015	33,091,223	34,781,201				(1,689,978)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued on exercise/vesting of equity awards	$ 6,499	$ 1	6,498
Stock issued on exercise/vesting of equity awards (in shares)		918,618
Stock based compensation	19,770		19,770
Excess tax benefit from stock based compensation	4,326		4,326
Acquisition of treasury stock	(18,203)					$ (18,203)
Acquisition of treasury stock (in shares)						(381,732)
Non-controlling interest	14						14
Other comprehensive income	(7,732)				(7,732)
Net income	61,733			61,733
Ending balance at Dec. 31, 2016	$ 532,178	$ 36	$ 284,646	$ 382,722	$ (75,057)	$ (60,362)	$ 193
Ending balance (shares) at Dec. 31, 2016	33,628,109	35,699,819				(2,071,710)

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 61,733	$ 51,565	$ 32,445
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34,580	31,465	28,028
Stock-based compensation expense	19,770	16,047	11,011
Unrealized foreign exchange gain	(1,001)	(3,798)	(424)
Deferred income taxes	(3,384)	2,238	76
Excess tax benefit from stock-based compensation	(4,326)	(1,458)	(1,181)
Change in fair value of earn-out consideration	(4,060)	0	0
Others, net	(107)	(278)	295
Change in operating assets and liabilities (net of effect of acquisitions):
Restricted cash	(2,137)	(787)	(747)
Accounts receivable	(18,062)	(9,087)	3,261
Prepaid expenses and other current assets	(5,421)	(3,112)	(3,930)
Accounts payable	(2,628)	44	(146)
Deferred revenue	5,726	2,566	(947)
Accrued employee costs	5,304	8,528	179
Accrued expenses and other liabilities	9,080	(4,699)	8,426
Advance income tax, net	437	8,865	(7,841)
Other assets	4,754	(1,408)	(1,846)
Net cash provided by operating activities	100,258	96,691	66,659
Cash flows from investing activities:
Purchase of property, plant and equipment	(25,850)	(25,585)	(27,678)
Business acquisition (net of cash acquired)	(28,666)	(44,270)	(58,185)
Purchase of short-term investments	(182,471)	(129,050)	(9,134)
Proceeds from redemption of short-term investments	182,320	125,365	6,735
Net cash used for investing activities	(54,667)	(73,540)	(88,262)
Cash flows from financing activities:
Principal payments on capital lease obligations	(348)	(720)	(967)
Proceeds from borrowings	0	30,000	50,000
Repayments of borrowings	(25,000)	(10,000)	0
Proceeds from non-controlling interest	0	176	0
Payment of debt issuance costs	0	(74)	(405)
Acquisition of treasury stock	(18,203)	(14,195)	(3,322)
Proceeds from exercise of stock options	6,499	3,375	6,459
Excess tax benefit from stock-based compensation	4,326	1,458	1,181
Net cash (used for)/provided by financing activities	(32,726)	10,020	52,946
Effect of exchange rate changes on cash and cash equivalents	(5,033)	(4,347)	(2,909)
Net increase in cash and cash equivalents	7,832	28,824	28,434
Cash and cash equivalents, beginning of year	205,323	176,499	148,065
Cash and cash equivalents, end of year	213,155	205,323	176,499
Supplemental disclosure of cash flow information:
Cash paid for interest	1,178	1,188	355
Cash paid for taxes, net of refund	15,667	11,505	11,204
Assets acquired under capital lease	$ 334	$ 215	$ 366

Organization	12 Months Ended
Organization	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization ExlService Holdings, Inc. (“ExlService Holdings”) is organized as a corporation under the laws of the state of Delaware. ExlService Holdings, together with its subsidiaries (collectively, the “Company”), operates in Business Process Management ("BPM") industry providing operations management services and analytics services that helps businesses enhance growth and profitability. Using its proprietary platforms, methodologies and tools, the Company looks deeper to help companies improve global operations, enhance data-driven insights, increase customer satisfaction, and manage risk and compliance. The Company’s clients are located principally in the U.S. and the U.K.

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies


(a)	Basis of Preparation and Principles of Consolidation

The accompanying consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“US GAAP”). The accompanying financial statements have been prepared on a consolidated basis and reflect the financial statements of ExlService Holdings and all of its subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Non-controlling interest is the equity in a subsidiary not attributable, directly or indirectly, to the parent. Non-controlling interest in the net assets of consolidated subsidiaries is disclosed separately from the Company's equity. Non-controlling interest consists of the amount of such interest at the date of obtaining control over the subsidiary, and the non-controlling interest's share of changes in equity since that date. The non-controlling interest in the operations for the years ended December 31, 2016 and 2015 was insignificant and is included under general and administrative expenses in the consolidated statements of income.


(b)	Use of Estimates

The preparation of the consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements during the reporting period. Although these estimates are based on management’s best assessment of the current business environment, actual results may be different from those estimates. The significant estimates and assumptions that affect the financial statements include, but are not limited to, allowance for doubtful receivables, recoverability of service tax receivables, assets and obligations related to employee benefit plans, deferred tax valuation allowances, income-tax uncertainties and other contingencies, valuation of derivative financial instruments, assumptions used to calculate stock-based compensation expense, depreciation and amortization periods, purchase price allocation, recoverability of long-term assets including goodwill and intangibles, and estimates to complete fixed price contracts.

In accordance with its policy, the Company reviews the estimated useful lives of its property, plant and equipment on an ongoing basis.


(c)	Foreign Currency Translation

The functional currency of each entity in the Company is its respective local country currency which is also the currency of the primary economic environment in which it operates except for the entities in Mauritius which use the U.S. dollar as its functional currency. Transactions in foreign currencies are initially recorded into functional currency at the rates of exchange prevailing on the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated into functional currency at the rates of exchange prevailing at the balance sheet date. All transaction foreign exchange gains and losses are recorded in the accompanying consolidated statements of income.

The assets and liabilities of the subsidiaries for which the functional currency is other than the U.S. dollar are translated into U.S. dollars, the reporting currency, at the rate of exchange prevailing on the balance sheet date. Revenues and expenses are translated into U.S. dollars at the exchange rates prevailing on the last business day of each month, which approximates the average monthly exchange rate. Resulting translation adjustments are included in accumulated other comprehensive loss in the consolidated balance sheet.


(d)	Revenue Recognition

The Company derives its revenues from operations management and analytics services. Revenues from operations management services are recognized primarily on a time-and-material based, transaction-based, outcome-based, cost-plus and fixed-price basis; revenues from analytics services are recognized primarily on a time-and-material and fixed price basis. The services provided by the Company under its contracts with the customer generally contain one unit of accounting except the software and related services contracts involving implementation services and post contract maintenance services. In such multiple element arrangements, revenue is allocated to maintenance based on the price charged when that element is sold separately (vendor specific objective evidence or “VSOE”). Revenues are recognized when the four basic criteria are met; persuasive evidence of an arrangement exists, the sales price is fixed or determinable, services have been performed and collection of amounts billed is reasonably assured.

Revenues under time-and-material, transaction and outcome-based contracts are recognized as the services are performed. When the terms of the client contract specify service level parameters that must be met (such as turnaround time or accuracy), the Company monitors such service level parameters to determine if any service credits or penalties have been incurred. Revenues are recognized net of any penalties or service credits that are due to a client.

Revenue from Analytics services including modeling, targeting and designing of campaigns and mail marketing including email marketing and other digital solutions is typically recognized on delivery of such campaigns. In respect of arrangements involving subcontracting, in part or whole, of the assigned work, the Company evaluates revenues to be recognized under Accounting Standard Codification ("ASC") topic 605-45, “Revenue recognition - Principal agent considerations”.

Revenues for Company’s fixed-price contracts are recognized using the proportional performance method when the pattern of performance under the contracts can be reasonably determined. The Company estimates the proportional performance of a contract by comparing the actual number of hours or days worked to the estimated total number of hours or days required to complete each engagement. The use of the proportional performance method requires significant judgment relative to estimating the number of hours or days required to complete the contracted scope of work, including assumptions and estimates relative to the length of time to complete the project and the nature and complexity of the work to be performed. The Company regularly monitors its estimates for completion of a project and record changes in the period in which a change in an estimate is determined. If a change in an estimate results in a projected loss on a project, such loss is recognized in the period in which it is first identified.

Revenues from the Company's software and related services contracts, which are not significant, are primarily related to maintenance renewals or incremental license fees for additional users. Maintenance revenues are generally recognized on a straight-line basis over the annual contract term. Fees for incremental license fees without any associated services are recognized upon delivery of the related incremental license. To a lesser extent, software and related services contracts may contain software license, related services and maintenance elements as a multiple element arrangement. In such cases, revenue is allocated to maintenance based on the price charged when that element is sold separately (vendor specific objective evidence or “VSOE”). Services related to software licenses are evaluated to determine whether those services are significant or essential to the functionality of the software. When services are significant or considered essential, revenues related to license fee and services are recognized as the services are performed using the percentage of completion method of accounting, under which the total value of revenue is recognized on the basis of the percentage that each contract’s total labor hours to date bears to the total expected labor hours (input method).

The Company accrues revenues for services rendered between the last billing date and the balance sheet date. Accordingly, its accounts receivable include amounts for services, as unbilled accounts receivables, that the Company has performed and for which an invoice has not yet been issued to the client.

The Company defers the revenues and related cost of revenue while a process is under migration and recognize such revenues and costs ratably over the period during which the related services are expected to be performed. The deferred costs are limited to the amounts of the deferred revenues. Deferred revenue also includes the amount for which the services have been rendered but the other conditions of revenue recognition are not met, for example where the Company does not have the persuasive evidence of the arrangements.

Reimbursements of out-of-pocket expenses received from clients are included as part of revenues. Reimbursements of out-of-pocket expenses included in revenues were $21,812, $18,848 and $19,606 for the years ended December 31, 2016, 2015 and 2014, respectively.


(e)	Cash and Cash Equivalents and Restricted Cash

The Company considers all highly liquid investments purchased with an original maturity of ninety days or less to be cash equivalents. Pursuant to the Company’s investment policy, surplus funds are invested in highly-rated mutual funds, money market accounts and time deposits to reduce its exposure to market risk with regard to these funds.

Restricted cash represents amounts on deposit with banks against bank guarantees issued through banks for equipment imports and for demands against pending income tax assessments (see Note 19 for details). These deposits with banks have maturity dates before and after December 31, 2017. Restricted cash also includes client funds held in dedicated bank accounts.


(f)	Investments

The Company’s investments consist of time deposits with financial institutions which are valued at cost and approximate fair value. Interest earned on such investments is included in interest income. Investments with original maturities greater than ninety days but less than twelve months are classified as short-term investments. Investments with maturities greater than twelve months from the balance sheet date are classified as long-term investments.

The Company's mutual fund investments are in debt and money market funds which invest in instruments of various maturities in India. These investments are accounted for in accordance with the fair value option under ASC topic 825-10 and change in fair value is included in interest and other income. The fair value is represented by original cost on the acquisition date and the net asset value (“NAV”) as quoted, at each reporting period. Gain or loss on the disposal of these investments is calculated using the weighted average cost of the investments sold or disposed and is included in interest and other income.


(g)	Accounts Receivable

Accounts receivable are recorded net of allowances for doubtful accounts. Allowances for doubtful accounts are established through the evaluation of the accounts receivable aging and prior collection experience to ascertain the ultimate collectability of these receivables. As of December 31, 2016 and 2015, the Company had $241 and $154 of allowance for doubtful accounts, respectively.

Accounts receivable include unbilled accounts receivable which represent revenues on contracts to be billed, in subsequent periods, as per the terms of the related contracts. As of December 31, 2016 and 2015, the Company had $34,785 and $29,589 of unbilled accounts receivable, respectively.


(h)	Property, plant and equipment

Property, plant and equipment are stated at cost less accumulated depreciation and impairment. Equipment held under capital leases are capitalized at the commencement of the lease at the lower of present value of minimum lease payments at the inception of the leases or its fair value. Advances paid towards acquisition of property, plant and equipment and the cost of property, plant and equipment not yet placed in service before the end of the reporting period are classified as capital work in progress.

Depreciation is computed using the straight-line method over the estimated useful lives of the assets. Depreciation and amortization on equipment held under capital leases and leasehold improvements are computed using the straight-line method over the shorter of the assets’ estimated useful lives or the lease term.


(i)	Software Development Costs

Costs incurred for developing software or enhancements to the existing software products to be sold and/or used for internal use are capitalized once preliminary project stage is complete and technological feasibility has been established, i.e., it is probable that the software will be used as intended. Costs that qualify as software development costs include (i) external direct costs of materials and services utilized in developing or obtaining computer software, (ii) compensation and related benefits for employees who are directly associated with the software project, and (iii) interest costs (if any) incurred while developing the computer software. The capitalized costs are amortized on a straight-line basis over the estimated useful life. Costs associated with preliminary project stage activities, training, maintenance and all post-implementation stage activities are expensed as incurred.


(j)	Business Combinations, Goodwill and Other Intangible Assets

ASC topic 805, “Business Combinations”, requires that the purchase method of accounting be used for all business combinations. The guidance specifies criteria as to intangible assets acquired in a business combination that must be recognized and reported separately from goodwill. Contingent consideration is recognized at its fair value on the acquisition date. A liability resulting from contingent consideration is re-measured to fair value as of each reporting date until the contingency is resolved. Changes in fair value are recognized in earnings. These fair value measurements represent Level 3 measurements as they are based on significant inputs not observable in the market. Under ASC topic 350, “Intangibles-Goodwill and Other”, all assets and liabilities of the acquired businesses, including goodwill, are assigned to reporting units. Acquisition related costs are expensed as incurred under general and administrative expenses.

Goodwill represents the cost of the acquired businesses in excess of the fair value of identifiable tangible and intangible net assets purchased. Goodwill is not amortized but is tested for impairment at least on an annual basis, relying on a number of factors including operating results, business plans and estimated future cash flows of the reporting units to which it is assigned. Recoverability of goodwill is evaluated using a two-step process.

The first step involves a comparison of the fair value of a reporting unit with its carrying value. The fair value of the reporting unit is measured by discounting estimated future cash flows. If the carrying amount of the reporting unit exceeds its fair value, the second step of the goodwill impairment test is performed to measure the amount of impairment loss, if any. The second step of the process involves a comparison of the implied fair value and carrying value of the goodwill of that reporting unit. If the carrying value of the reporting unit exceeds the implied fair value of the goodwill, an impairment loss is recognized in an amount equal to the excess. Goodwill of a reporting unit is tested for impairment annually or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying amount.

Intangible assets acquired in a business combination are initially valued and recognized at fair market value using generally accepted valuation methods appropriate for the type of intangible asset. Intangible assets with definite lives are amortized over the estimated useful lives and are reviewed for impairment, if indicators of impairment arise. The evaluation of impairment is based upon a comparison of the carrying amount of the intangible asset to its fair value, which is calculated using the estimated future undiscounted net cash flows expected to be generated by the asset. If the fair value of the intangible assets is less than the carrying amount of the asset, the asset is considered impaired and an impairment expense is recognized equal to any shortfall in the current period.

The Company’s definite lived intangible assets are amortized over their estimated useful lives as listed below using a straight-line method:



Customer relationships	3-15 years
Leasehold benefits	3-8 years
Developed technology	5-10 years
Non-compete agreements	1-5 years
Trade names and trademarks	3-10 years


(k)	Impairment of long-lived assets

Long-lived assets, including intangible assets, to be held and used are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Such assets are required to be tested for impairment if the carrying amount of the assets is higher than the future undiscounted net cash flows expected to be generated from the assets. The impairment amount to be recognized is measured as the amount by which the carrying value of the assets exceeds their fair value. The Company determines fair value by using a discounted cash flow approach.


(l)	Derivative Financial Instruments

In the normal course of business, the Company uses derivative instruments for the purpose of mitigating the exposure from foreign currency fluctuation risks associated with forecasted transactions denominated in certain foreign currencies and to minimize earnings and cash flow volatility associated with changes in foreign currency exchange rates, and not for speculative trading purposes. These derivative contracts are purchased within the Company’s policy and are with counterparties that are highly rated financial institutions.

The Company hedges anticipated transactions that are subject to foreign exchange exposure with foreign currency exchange contracts that qualify as cash flow hedges. Changes in the fair value of these cash flow hedges which are deemed effective, are recorded in accumulated other comprehensive income/(loss) (AOCI) until the hedged transactions occur and at that time are recognized in the foreign exchange gain/(loss) in the consolidated statement of income. Changes in the fair value of cash flow hedges deemed ineffective are recognized in the consolidated statements of income and are included in foreign exchange gain/(loss). The Company also uses derivatives instruments consisting of foreign currency exchange contracts to economically hedge intercompany balances and other monetary assets or liabilities denominated in currencies other than the functional currency. Changes in the fair value of these derivatives are recognized in the consolidated statements of income and are included in foreign exchange gain/(loss).

The Company evaluates hedge effectiveness of cash flow hedges at the time a contract is entered into as well as on an ongoing basis. If during this time, a contract is deemed ineffective, the change in the fair value is recorded in the consolidated statement of income and is included in foreign exchange gain/(loss). For hedge relationships that are discontinued because the forecasted transaction is not expected to occur by the end of the originally specified period, any related derivative amounts recorded in equity are reclassified to earnings.


(m)	Employee Benefits

Contributions to defined contribution plans are charged to the consolidated statements of income in the period in which services are rendered by the covered employees. Current service costs for defined benefit plans are accrued in the period to which they relate. The liability in respect of defined benefit plans is calculated annually by the Company using the projected unit credit method. Prior service cost, if any, resulting from an amendment to a plan is recognized and amortized over the remaining period of service of the covered employees.

The Company recognizes its liabilities for compensated absences dependent on whether the obligation is attributable to employee services already rendered, relates to rights that vest or accumulate and payment is probable and estimable.


(n)	Share-Based Compensation

The Company recognizes stock-based compensation expense in the consolidated financial statements for awards of equity instruments to employees and non-employee directors based on the grant-date fair value of those awards. The Company recognizes these compensation costs, net of an estimated forfeiture rate, over the requisite service period of the award. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeiture differs from those estimates.

Under the Company’s 2015 Amendment and Restatement of the 2006 Omnibus Award Plan (the “2015 Plan”), the Company grants performance-based restricted stock units (“PRSUs”) to executive officers and other specified employees. 50% of the PRSUs cliff vest based on a revenue target ("PU") at the end of a three-year period. The remaining 50% vest based on a market condition (“MUs”) that is contingent on meeting or exceeding the total shareholder return relative to a group of peer companies specified under the program, measured over a three-year performance period. The award recipient may earn up to two hundred percent (200%) of the PRSUs granted based on the actual achievement of both targets.

The fair value of each PU was determined based on the market price of one common share of the Company on the date of grant, and the associated compensation expense was calculated on the basis that performance targets to receive 100% of the PUs is probable of being achieved. The compensation expense for the PUs is recognized on a straight-line basis over the service period, which is through the end of the third year. Over this period, the number of shares that will be issued will be adjusted upward or downward based upon the probability of achievement of the performance targets. The ultimate number of shares issued and the related compensation cost recognized as an expense will be based on a comparison of the final performance metrics to the specified targets. The expense related to the unvested PUs as of December 31, 2016 was based on the Company's assessment that the performance criteria for these grants would be met at the 100% performance target level during the respective years of vesting.

The grant date fair value for the MUs was determined using a Monte Carlo simulation model and the related compensation expense is expensed on a straight-line basis over the vesting period. All compensation expense related to the MUs will be recognized if the requisite performance period is fulfilled, even if the market condition is not achieved.


(o)	Income Taxes

The Company calculates and provides for income taxes in each of the tax jurisdictions in which it operates. The deferred tax assets and liabilities are recognized for future tax consequences attributable to temporary differences between the financial statement carrying values of existing assets and liabilities and their respective tax bases and all operating losses carried forward, if any. Deferred tax assets and liabilities are measured using tax rates expected to apply to taxable income in the years in which the applicable temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates or tax status is recognized in the statement of income in the period in which the change is identified. Deferred tax assets are reduced by a valuation allowance if, based on available evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized.

The Company establishes provisions for uncertain tax provisions and related interest and penalties when the Company believes those tax positions are not more likely than not of being sustained, if challenged.


(p)	Financial Instruments and Concentration of Credit Risk

Financial Instruments. For certain financial instruments, including cash and cash equivalents, short-term investments, accounts receivable, accounts payable, accrued expenses, and other current liabilities, recorded amounts approximate fair value due to the relatively short maturity periods of such instruments.

Concentration of Credit Risk. Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents, time deposits, mutual fund investments, accounts receivable and derivative financial instruments. By their nature, all such financial instruments involve risks including the credit risks of non-performance by counterparties. Pursuant to the Company’s investment policy, its surplus funds are maintained as cash or cash equivalents and are invested in highly-rated mutual funds, money market accounts and time deposits, placed with highly rated financial institutions to reduce its exposure to market risk with regard to these funds. The Company’s exposure to credit risk on account receivable is influenced mainly by the individual characteristic of each customer and the concentration of risk from the top few customers. To mitigate this risk the Company evaluates the creditworthiness of its clients in conjunction with its revenue recognition processes as well as through its ongoing collectability assessment processes for accounts receivable. The Company does not enter into or trade financial instruments, including derivative financial instruments, for speculative purposes.


(q)	Lease Obligations

Leases under which the Company assumes substantially all risks and rewards of the ownership are classified as capital lease. When acquired, such assets are capitalized at fair value or present value of minimum committed lease payments at the inception of the lease, whichever is lower.

The Company leases its office facilities under non-cancellable operating lease agreements. Office facilities subject to an operating lease and the related lease payments are not recorded on the Company’s balance sheet. Lease payments under operating lease are recognized as an expense on a straight line basis in the consolidated statement of income over the lease term.


(r)	Government Grants

Government grants related to income are recognized as a reduction of expenses in the consolidated statement of income when there is a reasonable assurance that the entity will comply with the conditions attached to the grant and that the grants will be received.


(s)	Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss consists of amortization of actuarial gain/(loss) on retirement benefits and changes in the cumulative foreign currency translation adjustments. In addition, the Company enters into foreign currency exchange contracts, which are designated as cash flow hedges in accordance with ASC No. 815. Changes in the fair values of contracts that are deemed effective are recognized in other comprehensive income on the Company's consolidated balance sheet until the settlement of those contracts. The balances as of December 31, 2016 and 2015 are as follows:



	December 31, 2016			December 31, 2015
Cumulative currency translation adjustments	$	(77,299	)	$	(68,063	)
Unrealized gain on cash flow hedges, net of taxes of $1,207 and $662	2,740			824
Retirement benefits, net of taxes of ($342) and ($201)	(498		)	(86		)
Accumulated other comprehensive loss	$	(75,057	)	$	(67,325	)


(t)	Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, “Revenue from Contracts with Customers”. The new standard is effective for reporting periods beginning after December 15, 2017 and early adoption is not permitted. The comprehensive new standard will supersede existing revenue recognition guidance and require revenue to be recognized when promised goods or services are transferred to customers in amounts that reflect the consideration to which the Company expects to be entitled in exchange for those goods or services. Adoption of the new rules could affect the timing of revenue recognition for certain transactions of the Company. ASU No. 2014-09 is effective for the Company in the first quarter of fiscal 2018 using either one of two methods: (i) retrospectively to each prior reporting period presented with the option to elect certain practical expedients as defined within ASU No. 2014-09; or (ii) retrospectively with the cumulative effect of initially applying ASU No. 2014-09 recognized at the date of initial application and providing certain additional disclosures as defined per ASU No. 2014-09.

The Company is in process of evaluating the impact of the standard update. The ultimate impact on revenue resulting from the application of the new standard will be subject to assessments that are dependent on many variables, including, but not limited to, the terms of our contractual arrangements and our mix of business. Upon adoption, we expect there to be a change in the manner that variable consideration in our revenue arrangements is recognized from the current practice of recognizing such revenue as the services are performed and the variable consideration is earned to estimating the achievability of the variable conditions when we begin delivering services and recognizing that amount over the contractual period. The Company also expects a change in the manner that we recognize certain incremental and fulfillment costs from expensing them as incurred to deferring and recognizing them over the contractual period.

The Company continues to evaluate the available transition methods and our contractual arrangements. Our considerations include, but are not limited to, the comparability of our financial statements and the comparability within our industry from application of the new standard to our contractual arrangements. We plan to select a transition method by the second half of 2017. We have established an implementation team to implement the standard update related to the recognition of revenue from contracts with customers. The Company continues to evaluate the changes to accounting system and processes, and additional disclosure requirements that may be necessary.

In March 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net). ASU No. 2016-08 clarifies the implementation guidance on principal versus agent considerations. The guidance includes indicators to assist an entity in determining whether it controls a specified good or service before it is transferred to the customers. The amendments are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is currently evaluating the impact that the adoption of this guidance will have on its consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). ASU No. 2016-02 requires the identification of arrangements that should be accounted for as leases by lessees. In general, for lease arrangements exceeding a twelve month term, these arrangements must now be recognized as assets and liabilities on the balance sheet of the lessee. Under ASU No. 2016-02, a right-of-use asset and lease obligation will be recorded for all leases, whether operating or financing, while the income statement will reflect lease expense for operating leases and amortization/interest expense for financing leases. The balance sheet amount recorded for existing leases at the date of adoption of ASU No. 2016-02 must be calculated using the applicable incremental borrowing rate at the date of adoption. In addition, ASU No. 2016-02 requires the use of the modified retrospective method, which will require adjustment to all comparative periods presented in the consolidated financial statements. The new guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the impact that the adoption of this guidance will have on its consolidated financial statements and the implementation approach to be used.

In March 2016, the FASB issued ASU No. 2016-09, Compensation – Stock Compensation (Topic 718). ASU No. 2016-09 identifies areas for simplification involving several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, an option to recognize gross stock compensation expense with actual forfeitures recognized as they occur, as well as certain classifications on the statement of cash flows. The amendments are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. The Company is continuing to evaluate the impact of this update on its consolidated financial statements, however it expects to apply a modified retrospective approach to recognize expense based on actual forfeiture, recognize excess tax benefits and deficiencies on stock awards in the income tax provision and present the excess tax benefits and deficiencies in operating activities in the statement of cash flows as the primary effects of this update on its consolidated financial statements.

In June 2016, FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses, which require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is to be deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The new guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The amendment should be applied through a modified retrospective approach. Early adoption as of the fiscal years beginning after December 15, 2018 is permitted. The adoption of ASU No. 2016-13 is not expected to have a material effect on its consolidated financial statements.

In August 2016, FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments. The amendments apply to all entities that are required to present a statement of cash flows under Topic 230. The amendments are an improvement to GAAP because they provide guidance for each of the eight issues, thereby reducing the current and potential future diversity in practice. The amendments are effective for fiscal years beginning after December 31, 2017 and interim periods within those annual periods and should be applied using a retrospective transition method to each period presented. The Company does not expect the adoption of this ASU to have a material effect on its financial position or results of operations.

In November 2016, FASB issued ASU No. 2016-18, Statement of cash flows - Restricted cash. The amendments apply to all entities that have restricted cash or restricted cash equivalents and are required to present a statement of cash flows under Topic 230. The amendments in this update require that a statement of cash flows should explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. The amendments are effective for fiscal years beginning after December 31, 2017 and interim periods within those annual periods. Early adoption is permitted with an adjustment reflected as of the beginning of the fiscal year in which the amendment is adoption. The Company does not expect the adoption of this ASU to have a material effect on its financial position or results of operations.

Segment & Geographical Information

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment and Geographical Information

Segment & Geographical Information

The Company operates in the BPM industry and is a provider of operations management and analytics services. The Company has eight operating segments which are strategic business units that align its products and services with how it manages its business, approaches its key markets and interacts with its clients. Six of those operating segments provide BPM or “operations management” services, which it organizes into industry-focused operating segments (Insurance, Healthcare, Travel, Transportation and Logistics, Banking and Financial Services, and Utilities) and one “capability” operating segment (Finance and Accounting) that provides services to clients in our industry-focused segments as well as clients across other industries. In each of these six operating segments, the Company provides operations management services, which typically involve transfer to the Company of select business operations of a client, after which it administers and manages those operations for its client on an ongoing basis. The remaining two operating segments are Consulting, which provides industry-specific transformational services related to operations management services, and the Analytics operating segment, which provides services that focus on driving improved business outcomes for clients by generating data-driven insights across all parts of their business.

In prior years the Company presented two reportable segments: Operations Management (which included its insurance, healthcare, travel, transportation and logistics, finance and accounting, banking and financial services, utilities and consulting operating segments) and Analytics. Effective for the quarter and year ended December 31, 2016, the Company presents information for the following reportable segments:


•	Insurance


•	Healthcare


•	Travel, Transportation and Logistics (“TT&L”)


•	Finance and Accounting (“F&A”), and


•	Analytics

The remaining operating segments which includes banking and financial services, utilities and consulting operating segments have been included in a category called “All Other”. Segment information for all prior years presented herein has been changed to conform to the current presentation. This change in segment presentation does not affect its consolidated statements of income and comprehensive income, balance sheets or statements of cash flows.

The chief operating decision maker (“CODM”) generally reviews financial information such as revenues, cost of revenues and gross profit, disaggregated by the operating segments to allocate an overall budget among the operating segments.

The Company does not allocate and therefore the CODM does not evaluate other operating expenses, interest expense or income taxes by segment. Many of the Company’s assets are shared by multiple operating segments. The Company manages these assets on a total Company basis, not by operating segment, and therefore asset information and capital expenditures by operating segment are not presented.

The July 2016 acquisition of Liss Systems Limited (“Liss”) is included in the Insurance reportable segment. Similarly, the September 2016 acquisition of IQR Consulting Inc. (“IQR”) along with the October 2016 acquisition of Datasource Consulting, LLC (“Datasource”) are included in the Analytics reportable segment.

Revenues and cost of revenues for each of the years ended December 31, 2016, 2015 and 2014, for each of the reportable segments, are as follows:



	Year ended December 31, 2016
	Insurance		Healthcare		TT&L		F&A		Analytics		All Other		Total

Revenues, net	$	206,327	$	68,656	$	69,366	$	79,416	$	165,734	$	96,489	$	685,988
Cost of revenues (exclusive of depreciation and amortization)	146,203		44,098		41,962		48,302		106,341		61,050		447,956
Gross profit	$	60,124	$	24,558	$	27,404	$	31,114	$	59,393	$	35,439	$	238,032
Operating expenses													173,810
Foreign exchange gain, interest expense and other income, net													19,662
Income tax expense													22,151
Net income													$	61,733



	Year ended December 31, 2015
	Insurance		Healthcare		TT&L		F&A		Analytics		All Other		Total

Revenues, net	$	199,878	$	55,209	$	62,264	$	78,504	$	122,151	$	110,486	$	628,492
Cost of revenues (exclusive of depreciation and amortization)	134,196		37,224		37,506		46,846		78,838		68,307		402,917
Gross profit	$	65,682	$	17,985	$	24,758	$	31,658	$	43,313	$	42,179	$	225,575
Operating expenses													158,232
Foreign exchange gain, interest expense and other income, net													8,433
Income tax expense													24,211
Net income													$	51,565



	Year ended December 31, 2014
	Insurance		Healthcare		TT&L		F&A		Analytics		All Other		Total

Revenues, net	$	151,308	$	42,848	$	47,492	$	92,013	$	65,615	$	100,002	$	499,278
Cost of revenues (exclusive of depreciation and amortization)	107,026		29,598		29,945		56,770		46,042		63,154		332,535
Gross profit	$	44,282	$	13,250	$	17,547	$	35,243	$	19,573	$	36,848	$	166,743
Operating expenses													132,703
Foreign exchange gain, interest expense and other income, net													3,598
Income tax expense													5,193
Net income													$	32,445

Net revenues of the Company by service type, were as follows:



	Year ended December 31,
	2016		2015		2014
BPM and related services ⁽¹⁾	$	520,254	$	506,341	$	433,663
Analytics services	165,734		122,151		65,615
Total	$	685,988	$	628,492	$	499,278

(1) BPM and related services include revenues of all the operating segments other than Analytics. See reportable segment disclosure above.

The Company attributes the revenues to regions based upon the location of its customers.



	Year ended December 31,
	2016		2015		2014
Revenues, net
United States	$	554,945	$	496,418	$	368,870
Non-United States
United Kingdom	109,905		108,868		101,789
Rest of World	21,138		23,206		28,619
Total Non-United States	131,043		132,074		130,408
	$	685,988	$	628,492	$	499,278

Property, plant and equipment by geographic area, were as follows:



	December 31, 2016		December 31, 2015
Property, plant and equipment, net
India	$	23,362	$	23,415
United States	10,809		10,680
Philippines	11,900		11,285
Rest of World	2,958		2,611
	$	49,029	$	47,991

For a discussion of risks attendant to foreign operations, see “Item 1A. Risk Factors - Risks Related to the International Nature of Our Business”.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 32
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-Paragraph 42
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-Name Accounting Standards Codification
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Quarterly Financial Data

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data

Quarterly Financial Data (Unaudited)

Summarized quarterly results for the years ended December 31, 2016 and 2015 are as follows:



	Three months ended 2016								Year ended
	March 31		June 30		September 30		December 31		December 31, 2016

Revenues, net	$	167,036	$	170,478	$	171,200	$	177,274	$	685,988
Gross profit	$	58,657	$	58,452	$	59,433	$	61,490	$	238,032
Net income	$	13,820	$	16,375	$	16,050	$	15,488	$	61,733
Earnings Per Share:
Basic*	$	0.41	$	0.49	$	0.48	$	0.46	$	1.84
Diluted*	$	0.40	$	0.47	$	0.46	$	0.45	$	1.79
Weighted-average number of shares used in computing earnings per share:
Basic*	33,380,028		33,621,444		33,624,401		33,638,170		33,566,367
Diluted*	34,351,657		34,510,400		34,675,485		34,714,308		34,563,319

Stock compensation expense	$	5,809	$	4,450	$	4,484	$	5,027	$	19,770
Amortization of intangibles	$	2,715	$	2,718	$	2,848	$	3,592	$	11,873
	Three months ended 2015								Year ended
	March 31		June 30		September 30		December 31		December 31, 2015

Revenues, net	$	143,510	$	155,621	$	163,503	$	165,858	$	628,492
Gross profit	$	50,385	$	55,143	$	60,305	$	59,742	$	225,575
Net income	$	9,567	$	12,074	$	15,162	$	14,762	$	51,565
Earnings Per Share:
Basic^*	$	0.29	$	0.36	$	0.46	$	0.44	$	1.55
Diluted^*	$	0.28	$	0.35	$	0.44	$	0.43	$	1.51
Weighted-average number of shares used in computing earnings per share:
Basic*	33,236,259		33,417,079		33,307,312		33,231,716		33,298,104
Diluted*	34,051,971		34,207,973		34,180,635		34,272,731		34,178,340

Stock compensation expense	$	4,255	$	3,553	$	4,471	$	3,768	$	16,047
Amortization of intangibles	$	2,059	$	2,808	$	2,642	$	2,717	$	10,226

* Total of quarterly basic and diluted earnings per share and weighted average number of shares used in computing earnings per share will not be equal to year end basic and diluted earnings per share and weighted average number of shares used in computing earnings per share, respectively.

Earnings Per Share

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Earnings Per Share

Basic earnings per share is computed by dividing net income to common stockholders by the weighted average number of common shares outstanding during each period. Diluted earnings per share is computed using the weighted average number of common shares plus the potentially dilutive effect of common stock equivalents issued and outstanding at the reporting date, using the treasury stock method. Stock options, restricted stock and restricted stock units that are anti-dilutive are excluded from the computation of weighted average shares outstanding.

The following table sets forth the computation of basic and diluted earnings per share:



	Year ended December 31,
	2016		2015		2014
Numerators:
Net income	$	61,733	$	51,565	$	32,445
Denominators:
Basic weighted average common shares outstanding	33,566,367		33,298,104		32,804,606
Dilutive effect of share based awards	996,952		880,236		831,987
Diluted weighted average common shares outstanding	34,563,319		34,178,340		33,636,593
Earnings per share:
Basic	$	1.84	$	1.55	$	0.99
Diluted	$	1.79	$	1.51	$	0.96
Weighted average common shares considered anti-dilutive in computing diluted earnings per share	92,538		73,896		114,395

Other Income, net

12 Months Ended

Dec. 31, 2016

Other Nonoperating Income (Expense) [Abstract]

Other Income, net

Other Income, net consists of the following:



	Year ended December 31,
	2016		2015		2014
Interest and dividend income	$	1,673	$	2,904	$	3,709
Gain on sale of mutual fund investments	8,087		3,902		—
Change in fair value of earn-out consideration	4,060		—		—
Other, net	1,588		221		263
Other income, net	$	15,408	$	7,027	$	3,972

Property, Plant and Equipment

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment consist of the following:



	Estimated useful lives (Years)	December 31, 2016			December 31, 2015
Owned Assets:
Network equipment, computers and software	3-5	$	109,998		$	95,245
Leasehold improvements	3-8	31,192			28,603
Office furniture and equipment	3-8	15,426			14,000
Motor vehicles	2-5	580			540
Buildings	30	1,171			1,202
Land	-	766			787
Capital work in progress	-	4,964			3,140
		164,097			143,517
Less: Accumulated depreciation and amortization		(115,568		)	(96,079		)
		$	48,529		$	47,438
Assets under capital leases:
Leasehold improvements		$	854		$	877
Office furniture and equipment		133			136
Motor vehicles		810			806
		1,797			1,819
Less: Accumulated depreciation and amortization		(1,297		)	(1,266		)
		$	500		$	553
Property, Plant and Equipment, net		$	49,029		$	47,991

Total depreciation and amortization expense excluding amortization of intangibles for the year ended December 31, 2016, 2015 and 2014 was $22,707, $21,239 and $21,405, respectively. The Company capitalized software development costs, during the year ended December 31, 2016 and December 31, 2015 amounting to $2,242 and nil, respectively, which is included under Network equipment, computers and software. Amortization expense for the capitalized software development costs for the year ended December 31, 2016 and December 31, 2015 was $336 and nil, respectively.

Capital work in progress represents advances paid towards acquisition of property, plant and equipment and cost of property, plant and equipment and internally generated software costs not yet ready to be placed in service.

During the year ended December 31, 2016, the review indicated that there were no changes in estimated useful lives of property, plant and equipment.

Business Combinations, Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2016

Business Combinations [Abstract]

Business Combinations, Goodwill and Intangible Assets

a) Liss Systems Limited

On July 1, 2016, the Company entered into a share purchase agreement (the “Liss Agreement”) for the purchase of Liss.

Pursuant to the Liss Agreement, the Company purchased all of the issued and outstanding shares of Liss from the Liss shareholders for a cash consideration of $5,111. A portion of the purchase consideration otherwise payable was placed into escrow as security for the post-closing working capital adjustments and the indemnification obligations under the Liss Agreement.

The Company also issued 33,459 shares of restricted common stock with an aggregate fair value of $1,754 to certain key employees of Liss, each of whom accepted employment positions with the Company upon consummation of the combination. The restricted common stock vest proportionally over four years and the fair value of these grants will be recognized as compensation expense on a straight-line basis over the vesting term.

Liss is a provider of policy administration solutions for the life insurance and pensions industry. Liss’s flagship "LISSIA" platform includes multi-channel interfaces, underwriting, workflow engines, and document production modules to automate new policy issuance and simplify policy administration. Liss’s technology platform combined with EXL platforms’ such as LifePRO^® will automate key customer processes from new business to policy administration with very little human interactions. Accordingly, the Company paid a premium for the acquisition which is being reflected in the goodwill recognized from the purchase price allocation.

During the three months ended December 31, 2016, the Company finalized its purchase price allocation for the acquisition based on their fair values as set forth below:



	Amount
Tangible assets	$	517
Tangible liabilities	(993		)
Deferred tax liability	(643		)
Identifiable intangible assets:
Customer relationships	1,918
Developed technology	1,571
Trade names and trademarks	231
Goodwill	2,510
Total purchase price	$	5,111

The amount of goodwill recognized from the Liss acquisition is not deductible for tax purposes.

The intangibles such as customer relationships, developed technology and trade names and trademarks from the Liss acquisition are being amortized over a useful life of five, ten and three years, respectively.

b) IQR Consulting Inc.

On September 1, 2016, the Company entered into a share purchase agreement (the “IQR Agreement”) for the purchase of IQR.

Pursuant to the IQR Agreement, the Company purchased all of the issued and outstanding shares of IQR from the IQR shareholders for an aggregate consideration of $5,092. A portion of the purchase consideration otherwise payable was placed into escrow as security for post-closing working capital adjustments and the indemnification obligations under the IQR Agreement.

The Company also issued 21,987 restricted stock units with an aggregate fair value of $1,125 to certain key employees of IQR, each of whom accepted employment positions with the Company upon consummation of the combination. The restricted stock units vest proportionally over four years and the fair value of these grants will be recognized as compensation expense on a straight line basis over the vesting term.

IQR is a provider of marketing and risk analytics services to super-regional banks and credit unions. IQR specializes in data analytics and related consulting services. IQR’s industry focus aligns well with the Company's Analytics strengths and the Company anticipates the acquisition will allow the Company to penetrate into super-regional banks, as well as the underserved credit union market. Accordingly, the Company paid a premium for the acquisition, which is reflected in the goodwill recognized from the purchase price allocation.

During the three months ended December 31, 2016, the Company finalized its purchase price allocation for the acquisition based on their fair values as set forth below:



	Amount
Tangible assets	$	1,449
Tangible liabilities	(420		)
Deferred tax liability	(836		)
Identifiable intangible assets:
Customer relationships	2,300
Goodwill	2,599
Total purchase price	$	5,092

The amount of goodwill recognized from the IQR acquisition is not deductible for tax purposes.

The customer relationships from the IQR acquisition are being amortized over the average useful life of eight years.

c) Datasource Consulting, LLC.

On October 22, 2016, the Company entered into a membership interests purchase agreement (the “Datasource Agreement”) for the purchase of Datasource.

Pursuant to the Datasource Agreement, the Company purchased all of the membership interest of Datasource from its members for an aggregate consideration of $20,318. A portion of the purchase consideration otherwise payable was placed into escrow as security for the post-closing working capital adjustments and the indemnification obligations under the Datasource Agreement.

The Company also issued 93,604 shares of restricted common stock with an aggregate fair value of $4,483 to certain key employees of Datasource, each of whom accepted employment positions with the Company upon consummation of the combination. The restricted common stock vest proportionally over four years and the fair value of these grants will be recognized as compensation expense on a straight line basis over the vesting term.

Datasource is specialized in Enterprise Data Management and Business Intelligence. Datasource helps clients design data management strategies, implement data infrastructure and manage data assets. This acquisition expands the Company's addressable market within analytics and allows it to compete in the large and growing enterprise data management and business intelligence markets. Accordingly, the Company paid a premium for the acquisition, which is reflected in the goodwill recognized from the purchase price allocation.

The Company has preliminarily allocated the purchase price to the net tangible and intangible assets based on their fair values as set forth below:



	Amount
Tangible assets	$	3,582
Tangible liabilities	(1,503		)
Identifiable intangible assets:
Customer relationships	6,340
Developed technology	520
Trade names and trademarks	380
Goodwill	10,999
Total purchase price	$	20,318

The amount of goodwill recognized from the Datasource acquisition is deductible for tax purposes.

The customer relationships from the Datasource acquisition are being amortized over the weighted average useful life of 6 years, and developed technology and trademarks are being amortized over the useful life of 5 years and 3 years, respectively.

Under ASC topic 805, “Business Combinations,” the preliminary allocation of the purchase price to the tangible and intangible assets and liabilities acquired may change for a period of up to one year from the date of the acquisition. The Company’s purchase accounting for Datasource as of December 31, 2016 was incomplete and the Company expects to complete the working capital adjustment and valuation of the tangible assets, intangible assets and liabilities assumed as of the acquisition date during the first quarter of 2017. Accordingly, the Company may adjust the amounts recorded as of December 31, 2016 to reflect the final valuations of the assets acquired or liabilities assumed.

During the year ended December 31, 2016, the Company recognized $633 as acquisition related costs for its Liss, IQR and Datasource acquisitions. Such amounts are included in general and administrative expenses in the consolidated statements of income. The Company’s results of operations for the year ended December 31, 2016 includes revenues of $6,855 from its Liss, IQR and Datasource acquisitions from the date on which these acquisitions were consummated through December 31, 2016. It is not practicable to disclose the net earnings since management does not allocate or evaluate operating expenses and income taxes at that level.

Goodwill

The following table sets forth details of the Company’s goodwill balance as of December 31, 2016:



	Insurance			Healthcare		TT&L			F&A			Analytics		All Other		Total
Balance as at January 1, 2015	$	35,824		$	19,276	$	13,833		$	48,555		$	16,785	$	5,326	$	139,599
Acquisitions	—			—		—			—			33,155		—		33,155
Currency translation adjustments	—			—		(555		)	(664		)	—		—		(1,219		)
Balance as at December 31, 2015	$	35,824		$	19,276	$	13,278		$	47,891		$	49,940	$	5,326	$	171,535
Acquisitions	2,510			—		—			—			13,598		—		16,108
Currency translation adjustments	(224		)	—		(295		)	(354		)	—		—		(873		)
Balance as at December 31, 2016	$	38,110		$	19,276	$	12,983		$	47,537		$	63,538	$	5,326	$	186,770

Based on the results of the impairment testing performed during the year ended December 31, 2016, the Company’s goodwill was not impaired. The Company makes every reasonable effort to ensure that it accurately estimates the fair value of the reporting units. However, future changes in the assumptions used to make these estimates could result in an impairment loss.

Intangible Assets

Information regarding the Company’s intangible assets is set forth below:



	As of December 31, 2016
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	75,181	$	(32,968	)	$	42,213
Leasehold benefits	2,715		(2,247		)	468
Developed technology	14,186		(6,468		)	7,718
Non-compete agreements	2,045		(1,612		)	433
Trade names and trademarks	5,360		(3,322		)	2,038
	$	99,487	$	(46,617	)	$	52,870
Indefinite-lived intangible assets:
Trade names and trademarks	$	900	$	—		$	900
Total intangible assets	$	100,387	$	(46,617	)	$	53,770



	As of December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	64,816	$	(24,215	)	$	40,601
Leasehold benefits	2,789		(2,109		)	680
Developed technology	12,234		(4,363		)	7,871
Non-compete agreements	2,045		(1,451		)	594
Trade names and trademarks	4,770		(2,683		)	2,087
	$	86,654	$	(34,821	)	$	51,833
Indefinite-lived intangible assets:
Trade names and trademarks	$	900	$	—		$	900
Total intangible assets	$	87,554	$	(34,821	)	$	52,733

Amortization expense for the years ended December 31, 2016, 2015 and 2014 was $11,873, $10,226 and $6,623, respectively. The remaining weighted average life of intangible assets was 5.8 years for customer relationships, 2.4 years for leasehold benefits, 4.9 years for developed technology, 2.5 years for non-compete agreements and 5.3 years for trade names and trademarks.



Estimated amortization of intangible assets during the year ending December 31:
2017	$	13,910
2018	12,156
2019	11,257
2020	4,111
2021 and thereafter	11,436
Total	$	52,870

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Accrued expenses and other current liabilities

12 Months Ended

Dec. 31, 2016

Accounts Payable and Accrued Liabilities, Current [Abstract]

Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current

Accrued expenses and other current liabilities

Accrued expenses and other current liabilities consists of the following:



	December 31, 2016		December 31, 2015
Accrued expenses	$	30,690	$	26,238
Derivative instruments	1,430		1,226
Client liability account	4,005		2,217
Other current liabilities	7,139		4,569
Accrued expenses and other current liabilities	$	43,264	$	34,250

Non-current liabilities

12 Months Ended

Dec. 31, 2016

Liabilities, Noncurrent [Abstract]

Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Noncurrent

Non-current liabilities

Non-current liabilities consists of the following:



	December 31, 2016		December 31, 2015
Derivative instruments	$	828	$	1,132
Unrecognized tax benefits	3,640		3,066
Deferred rent	7,237		6,515
Retirement benefits	1,977		1,441
Other non-current liabilities	1,137		5,501
Non-current liabilities	$	14,819	$	17,655

Fair Value Measurements

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurements

ASC topic 820, “Fair Value Measurements and Disclosures ” ("ASC No. 820") defines fair value as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date and in the principal or most advantageous market for that asset or liability. The fair value should be calculated based on assumptions that market participants would use in pricing the asset or liability, not on assumptions specific to the entity. In addition, the fair value of liabilities should include consideration of non-performance risk, including the Company’s own credit risk.

ASC No. 820 establishes a three-level hierarchy of fair value measurements based on whether the inputs to those measurements are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. The fair-value hierarchy requires the use of observable market data when available and consists of the following levels:


•	Level 1—Quoted prices for identical instruments in active markets;


•	Level 2—Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs are observable in active markets; and


•	Level 3—Valuations derived from valuation techniques in which one or more significant inputs are unobservable.

The following table sets forth the Company’s assets and liabilities that were accounted for at fair value as of December 31, 2016 and 2015. The table excludes short-term investments, accounts receivable, accounts payable and accrued expenses for which fair values approximate their carrying amounts.

Assets and Liabilities Measured at Fair Value

The assets and liabilities measured at fair value on recurring basis are summarized below:



As of December 31, 2016	Level 1		Level 2		Level 3		Total
Assets
Money market and mutual funds*	$	118,185	$	—	$	—	$	118,185
Derivative financial instruments	—		6,319		—		6,319
Total	$	118,185	$	6,319	$	—	$	124,504
Liabilities
Derivative financial instruments	$	—	$	2,258	$	—	$	2,258
Total	$	—	$	2,258	$	—	$	2,258

As of December 31, 2015	Level 1		Level 2		Level 3		Total
Assets
Money market and mutual funds*	$	118,478	$	—	$	—	$	118,478
Derivative financial instruments	—		4,184		—		4,184
Total	$	118,478	$	4,184	$	—	$	122,662
Liabilities
Derivative financial instruments	$	—	$	2,358	$	—	$	2,358
Fair value of earn-out consideration	—		—		4,060		4,060
Total	$	—	$	2,358	$	4,060	$	6,418

* Included as a part of cash and cash equivalents.

Derivative Financial Instruments: The Company’s derivative financial instruments consist of foreign currency forward exchange contracts. Fair values for derivative financial instruments are based on independent sources including highly rated financial institutions and are classified as Level 2. See Note 12 for further details.

Fair value of earn-out consideration: The fair value measurement of earn-out consideration is determined using Level 3 inputs. The Company’s earn-out consideration represents a component of the total purchase consideration for its acquisition of RPM Direct LLC and RPM Data Solutions LLC (collectively, "RPM") in 2015. The measurement was calculated using unobservable inputs based on the Company’s own assessment of achievement of certain performance goals by RPM during the 2015 and 2016 calendar years. The Company estimated the fair value of the earn out consideration to be $4,060 utilizing a Monte Carlo simulation as at December 31, 2015. The Monte-Carlo simulation model simulates a range of possible performance levels and estimates the probabilities of the potential payouts. This model also incorporates a range of assumptions like discount rate, risk-free rate, assumed cost of debt, etc. The performance goals of RPM were not achieved during calendar year 2016 and accordingly the Company reduced the liability to nil as of December 31, 2016.

Derivatives and Hedge Accounting

12 Months Ended

Dec. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedge Accounting

The Company uses derivative instruments and hedging transactions to mitigate exposure to foreign currency fluctuation risks associated with forecasted transactions denominated in certain foreign currencies and to minimize earnings and cash flow volatility associated with changes in foreign currency exchanges rates. The Company’s derivative financial instruments are largely forward foreign exchange contracts that are designated effective and that qualify as cash flow hedges under ASC No. 815. The Company had outstanding cash flow hedges totaling $218,545 as of December 31, 2016 and $230,894 as of December 31, 2015. The changes in the fair value of these cash flow hedges is recognized in the other comprehensive income on the Company's consolidated balance sheet.

The Company also enters into foreign currency forward contracts to economically hedge its intercompany balances and other monetary assets and liabilities denominated in currencies other than functional currencies. These derivatives do not qualify as fair value hedges under ASC No. 815. Changes in the fair value of these derivatives are recognized in the consolidated statements of income and are included in foreign exchange gain/loss. The Company’s primary exchange rate exposure is with the Indian Rupee, the U.K. pound sterling and the Philippine peso. The Company also has exposure to Colombian pesos, Czech Koruna, Euro, South African ZAR and other local currencies in which it operates. Outstanding foreign currency forward contracts amounted to $71,318 and GBP 11,153 as of December 31, 2016 and amounted to $61,641 and GBP 13,256 as of December 31, 2015.

The Company estimates that approximately $1,781 of net derivative losses included in accumulated other comprehensive loss (“AOCI”) could be reclassified into earnings within the next twelve months based on exchange rates prevailing as of December 31, 2016. At December 31, 2016, the maximum outstanding term of the cash flow hedges was forty-five months.

The Company evaluates hedge effectiveness at the time a contract is entered into as well as on an ongoing basis. If during this time a contract is deemed ineffective, the change in the fair value is recorded in the consolidated statements of income and is included in foreign exchange gain/(loss). For hedging positions that are discontinued because the forecasted transaction is not expected to occur by the end of the originally specified period, any related amounts recorded in equity are reclassified to earnings. There were no such significant amounts of gains or losses that were reclassified from AOCI into earnings during the years ended December 31, 2016 and 2015.

The following tables set forth the fair value of the foreign currency exchange contracts and their location on the consolidated financial statements:

Derivatives designated as hedging instruments:



	December 31, 2016		December 31, 2015
Other current assets:
Foreign currency exchange contracts	$	3,211	$	2,664
Other assets:
Foreign currency exchange contracts	$	2,994	$	1,175
Accrued expenses and other current liabilities:
Foreign currency exchange contracts	$	1,430	$	1,226
Other non-current liabilities:
Foreign currency exchange contracts	$	828	$	1,132

Derivatives not designated as hedging instruments:



	December 31, 2016		December 31, 2015
Other current assets:
Foreign currency exchange contracts	$	113	$	345

The following tables set forth the effect of foreign currency exchange contracts on the consolidated statements of income for the years ended December 31, 2016 and 2015:



Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI on Derivative (Effective Portion)					Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Gain/ (Loss) Reclassified from AOCI into Income (Effective Portion)					Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	2016		2015				2016		2015				2016		2015
Foreign exchange contracts	$	3,895	$	(1,111	)	Foreign exchange gain/(loss)	$	1,434	$	(1,117	)	Foreign exchange gain/(loss)	$	—	$	—



Derivatives not designated as Hedging Instruments		Amount of Gain/(Loss) Recognized in Income on Derivatives
Derivatives not designated as Hedging Instruments	Location of Gain or (Loss) Recognized in Income on Derivatives	2016		2015
Foreign exchange contracts	Foreign exchange gain	$	4,790	$	862

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 815
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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+ Details

Borrowings	12 Months Ended
Borrowings	Dec. 31, 2016
Debt Disclosure [Abstract]
Borrowings	Borrowings On October 24, 2014, the Company entered into a credit agreement (as amended, the “Credit Agreement”) with certain lenders and JPMorgan Chase Bank, N.A., as Administrative Agent. The Credit Agreement provided for a $50,000 revolving credit facility (the “Credit Facility”), including a letter of credit sub-facility, for a period of five years. The Company had an option to increase the commitments under the Credit Facility by up to an additional $50,000, which it exercised on February 23, 2015 through an amendment to the Credit Agreement. The Credit Facility has a maturity date of October 24, 2019 and is voluntarily pre-payable from time to time without premium or penalty. The Company entered into a second amendment to the Credit Agreement effective as of September 28, 2015 to address a minor clarification to the definition of change of control. Borrowings under the Credit Agreement bear interest at a rate equal to the specified prime rate (alternate base rate) or adjusted LIBO rate, plus, an applicable margin. The applicable margin is tied to the Company’s leverage ratio and ranges from 0.25% to 0.75% per annum with respect to loans pegged to the specified prime rate, and 1.25% to 1.75% per annum on loans pegged to the adjusted LIBO rate. The revolving credit commitments under the Credit Agreement are subject to a commitment fee. The commitment fee is also tied to the Company’s leverage ratio, and ranges from 0.20% to 0.30% per annum on the average daily amount by which the aggregate revolving commitments exceed the sum of outstanding revolving loans and letter of credit obligations. The Credit Facility carried an effective interest rate of 2.21% per annum during the year ended December 31, 2016. Borrowings under the Credit Facility may be used for working capital, general corporate purposes and for acquisitions. The amount outstanding as of December 31, 2016 is $45,000, of which $10,000 is expected to be repaid within next twelve months and is included under “short-term borrowings” in the consolidated balance sheet. In connection with the financing, the Company incurred debt issuance costs, which are deferred and amortized as an adjustment to interest expense over the term of the Credit Facility. The unamortized debt issuance costs as of December 31, 2016 and December 31, 2015 was $272 and $368, respectively and is included under "other current assets" and “other assets” in the consolidated balance sheets. The Credit Facility is guaranteed by the Company's domestic subsidiaries and material foreign subsidiaries and is secured by all or substantially all of the assets of the Company and its material domestic subsidiaries. The Credit Agreement contains certain covenants including a restriction on our indebtedness, and a covenant to not permit the interest coverage ratio (the ratio of EBIT to cash interest expense) or the leverage ratio (total funded indebtedness to EBITDA), for the four consecutive quarter period ending on the last day of each fiscal quarter, to be less than 3.5 to 1.0 or 2.5 to 1.0, respectively. At December 31, 2016, we were in compliance with the financial covenants listed above.

Capital Structure	12 Months Ended
Capital Structure	Dec. 31, 2016
Equity [Abstract]
Capital Structure	Capital Structure Common Stock The Company has one class of common stock outstanding. During the years ended December 31, 2016 and 2015, the Company acquired 17,676 and 15,078 shares of common stock, respectively from employees in connection with withholding tax payments related to the vesting of restricted stock for a total consideration of $807 and $484, respectively. The weighted average purchase price per share of $45.65 and $32.10, respectively, was the average of the high and low price of the Company’s share of common stock on the Nasdaq Global Select Market on the trading day prior to the vesting date of the shares of restricted stock. On December 30, 2014, the Company’s Board of Directors authorized up to an annual $20,000 common stock repurchase program (the “2014 Repurchase Program”), under which shares may be purchased by the Company from time to time from the open market and through private transactions during each of the fiscal years 2015 to 2017. During the year ended December 31, 2016, the Company purchased 364,056 shares of its common stock for an aggregate purchase price of approximately $17,396, including commissions, representing an average purchase price per share of $47.78 under the 2014 Repurchase program. During the year ended December 31, 2015, the Company purchased 377,015 shares of its common stock for an aggregate purchase price of approximately $13,711, including commissions, representing an average purchase price per share of $36.37 under the 2014 Repurchase program. Repurchased shares have been recorded as treasury shares and will be held until the Board of Directors designates that these shares be retired or used for other purposes.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.E)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 235
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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+ Details

Employee Benefit Plans

12 Months Ended

Dec. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

The Company’s Gratuity Plans in India ("Gratuity Plan") provide for lump sum payment to vested employees on retirement or upon termination of employment in an amount based on the respective employee’s salary and years of employment with the Company. Liabilities with regard to the Gratuity Plans are determined by actuarial valuation using the projected unit credit method. Current service costs for the Gratuity Plan are accrued in the year to which they relate. Actuarial gains or losses or prior service costs, if any, resulting from amendments to the plans are recognized and amortized over the remaining period of service of the employees.

In addition, the Company’s subsidiary operating in the Philippines conforms to the minimum regulatory benefit which provide for lump sum payment to vested employees on retirement from employment in an amount based on the respective employee’s salary and years of employment with the Company (the "Philippines Plan"). The benefit costs of the Philippines Plan for the year are calculated on an actuarial basis.

The benefit obligation has been measured as of December 31, 2016. The following table sets forth the activity and the funded status of the Gratuity Plans and the amounts recognized in the Company’s consolidated financial statements at the end of the relevant periods:



	December 31,
	2016			2015
Change in projected benefit obligation:
Projected benefit obligation at the beginning of the year	$	7,909		$	7,563
Service cost	1,601			1,638
Interest cost	599			550
Benefits paid	(837		)	(851		)
Actuarial (gain)/loss	677			(609		)
Acquisition	47			—
Effect of exchange rate changes	(285		)	(382		)

Projected benefit obligation at the end of the year	$	9,711		$	7,909
Unfunded amount–non-current	$	1,977		$	1,441
Unfunded amount–current	2,094			1,545
Total accrued liability	$	4,071		$	2,986

Accumulated benefit obligation	$	6,533		$	5,537

Net gratuity cost includes the following components:



	Year ended December 31,
	2016			2015			2014
Service cost	$	1,601		$	1,638		$	1,523
Interest cost	599			550			559
Expected return on plan assets	(416		)	(385		)	(172		)
Actuarial loss	90			211			149
Net gratuity cost	$	1,874		$	2,014		$	2,059

The amount in accumulated other comprehensive loss that is expected to be recognized as a component of net periodic benefit cost over the next fiscal year is $268. The components of accumulated other comprehensive loss that have not been recognized as components of net gratuity cost in the statement of income as of December 31, 2016 and 2015 is as follows:



	December 31,
	2016		2015
Net actuarial loss	$	489	$	77
Net prior service cost	9		9
Accumulated other comprehensive loss, net of tax	$	498	$	86

The weighted average actuarial assumptions used to determine benefit obligations and net periodic gratuity cost are:



	December 31,
	2016		2015		2014
Discount rate	6.8	%	7.8	%	8.0	%
Rate of increase in compensation levels	9.2	%	8.4	%	8.2	%
Expected long term rate of return on plan assets per annum	9.0	%	9.0	%	9.0	%

The Company evaluates these assumptions annually based on its long-term plans of growth and industry standards. The discount rates are based on current market yields on government securities adjusted for a suitable risk premium.



Expected benefit payments during the year ending December 31,
2017	$	2,782
2018	$	2,407
2019	$	2,146
2020	$	1,960
2021	$	1,785
2022 to 2026	$	5,238

The Company's gratuity plan in India is partially funded and the Philippines Plan is unfunded. The Company makes annual contributions to the employees’ gratuity fund established with Life Insurance Corporation of India and HDFC Standard Life Insurance Company. They calculate the annual contribution required to be made by the Company and manage the Gratuity Plans, including any required payouts. Fund managers manage these funds on a cash accumulation basis and declare interest retrospectively on March 31 of each year.



Change in Plan Assets
Plan assets at January 1, 2015	$	4,752
Actual return	355
Employer contribution	903
Benefits paid*	(851		)
Effect of exchange rate changes	(236		)
Plan assets December 31, 2015	$	4,923
Actual return	450
Employer contribution	1,242
Benefits paid*	(837		)
Effect of exchange rate changes	(138		)
Plan assets December 31, 2016	$	5,640

* All Benefits payments were made through the plan assets during the year ended December 31, 2016 and December 31, 2015.

The Exl Service 401(k) Plan (the “401(k) Plan”) under Section 401(k) of the Internal Revenue Code of 1986 (the “Code”), covering all eligible employees, as defined in the Code is a defined contribution plan. The Company may make discretionary contributions of up to a maximum of 3% of employee compensation within certain limits. Contributions to the 401(k) Plan amounted to $2,383, $1,907 and $1,503 during the years ended December 31, 2016, 2015 and 2014, respectively.

During the years ended December 31, 2016, 2015 and 2014, the Company contributed $6,306, $5,753 and $5,802 for the years ended December 31, 2016, 2015 and 2014, respectively, for various defined contribution plans on behalf of its employees in India, the Philippines, Bulgaria, Romania, the Czech Republic, South Africa, Colombia, and Singapore.

Leases

12 Months Ended

Dec. 31, 2016

Leases [Abstract]

Leases

The Company finances its use of certain motor vehicles under various lease arrangements provided by financial institutions. Future minimum lease payments under these capital leases as of December 31, 2016 are as follows:



Year ending December 31:
2017	$	289
2018	186
2019	117
2020	47
Total minimum lease payments	639
Less: amount representing interest	107
Present value of minimum lease payments	532
Less: current portion	232
Long term capital lease obligation	$	300

The Company conducts its operations using facilities leased under non-cancelable operating lease agreements that expire at various dates. Future minimum lease payments under non-cancelable agreements expiring after December 31, 2016 are set forth below:



Year ending December 31:
2017	$	9,586
2018	8,119
2019	5,895
2020	4,085
2021	1,950
2022 and thereafter	1,398
Future minimum lease payment	$	31,033

The operating leases are subject to renewal periodically and have scheduled rent increases. The Company recognizes rent on such leases on a straight line basis over the non-cancelable lease period determined under ASC topic 840, “Leases”. Rent expense under both cancelable and non-cancelable operating leases was $21,382, $19,943 and $18,884 for the years ended December 31, 2016, 2015 and 2014, respectively. Deferred rent as of December 31, 2016 and 2015 was $7,915 and $7,066, respectively, and is included under “Accrued expenses and other current liabilities” and “Non-current liabilities” in the consolidated balance sheets.

Income Taxes

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Taxes

The components of income before income taxes consist of the following:



	Year ended December 31,
	2016		2015		2014
Domestic	$	12,652	$	25,045	$	(4,785	)
Foreign	71,232		50,731		42,423
	$	83,884	$	75,776	$	37,638

The income tax expense consists of the following:



	Year ended December 31,
	2016			2015			2014
Current provision/(benefit):
Domestic	$	7,107		$	9,951		$	(1,069	)
Foreign	18,428			12,022			6,186
	$	25,535		$	21,973		$	5,117
Deferred provision/(benefit):
Domestic	$	(2,506	)	$	3,041		$	535
Foreign	(878		)	(803		)	(459		)
	$	(3,384	)	$	2,238		$	76
Income tax expense	$	22,151		$	24,211		$	5,193

The effective income tax rate differs from the amount computed by applying the U.S. federal statutory income tax rate to income before income taxes approximately as follows:



	December 31,
	2016			2015			2014
Expected tax expense	$	29,361		$	26,521		$	12,797
Change in valuation allowance	22			19			64
Impact of tax holiday	(4,027		)	(2,991		)	(3,208		)
Foreign tax rate differential	(2,716		)	(2,797		)	(3,327		)
Deferred tax (benefit)/provision	(878		)	(803		)	(459		)
Unrecognized tax benefits and interest	495			324			(1,846		)
State taxes, net of Federal taxes	202			1,327			593
Non-deductible expenses	144			26			15
Prior year tax expense/(benefit)	—			2,450			—
Other	(452		)	135			564
Tax expense	$	22,151		$	24,211		$	5,193

The effective tax rate decreased from 32.0% for the year ended December 31, 2015 to 26.4% for the year ended December 31, 2016. The decrease was the result of (i) higher income tax expense during the year ended December 31, 2015 due to certain adjustments; (ii) lower domestic profits in 2016; and (iii) higher earnings and incentives in lower tax jurisdictions.

We also derive benefit from a corporate tax holiday in the Philippines for our operations centers established there over the last several years. The tax holiday expired for two of our centers in 2014 and in 2016 and will expire over the next six years for other centers, which may lead to an increase in our overall tax rate. Following the expiry of the tax exemption, income generated from centers in the Philippines will be taxed at the prevailing annual tax rate, which is currently 5% on gross income.

Certain operations centers in India, which were established in Special Economic Zones (“SEZs”), are eligible for tax incentives until 2025. These operations centers are eligible for a 100% income tax exemption for first five years of operations and 50% exemption for a period of five years thereafter.

The diluted earnings per share effect of the tax holiday is $0.12, $0.09 and $0.10 for the years ended December 31, 2016, 2015 and 2014, respectively.

The components of the deferred tax balances as of December 31, 2016 and 2015 are as follows:



	December 31,
	2016			2015
Deferred tax assets:
Tax credit carry forward	$	4,806		$	5,164
Depreciation and amortization	3,765			3,777
Share-based compensation	10,385			8,099
Accrued employee costs and other expenses	5,130			3,079
Net operating loss carry forwards	1,856			3,746
Unrealized exchange loss	2,099			1,136
Deferred rent	1,307			1,292
Others	484			62
	$	29,832		$	26,355
Valuation allowance	(454		)	(595		)
Deferred tax assets	$	29,378		$	25,760
Deferred tax liabilities:
Unrealized exchange gain	$	1,414		$	848
Intangible assets	13,165			11,163
Deferred tax liabilities:	$	14,579		$	12,011
Net deferred tax assets	$	14,799		$	13,749

Deferred tax assets and liabilities are recognized for future tax consequences attributable to temporary differences between the financial statement carrying values of assets and liabilities and their respective tax bases and operating loss carry forwards. At December 31, 2016 and 2015, the Company performed an analysis of the deferred tax asset valuation allowance for net operating loss carry forward for its domestic entities. Based on this analysis, the Company continues to carry a valuation allowance on the deferred tax assets on certain net operating loss carry forwards. Accordingly, the Company had recorded a valuation allowance of $351 and $512 as of December 31, 2016 and 2015, respectively. The Company also recorded a valuation allowance of $103 and $83 related to tax credit carry forward as of December 31, 2016 and 2015, respectively.

As a result of the multiple acquisitions over the last few years, the Company acquired federal and state net operating losses in the United States. As of December 31, 2016 and 2015, the Company has federal net operating loss carry forwards of approximately $4,052 and $9,063, respectively, which expire through various years until 2032. The Company’s federal net operating loss carry forwards are subject to certain annual utilization limitations under Section 382 of the United States Internal Revenue Code. The Company also has state and local net operating loss carry forwards of varying amounts, which are subject to limitations under the applicable rules and regulations of those taxing jurisdictions. The Company estimates that it will be able to utilize all of the losses before their expiration.

At December 31, 2016 and 2015, no deferred income taxes have been provided for the Company’s share of undistributed net earnings of foreign operations due to management’s intent to reinvest such amounts indefinitely. Such earnings totaled approximately $315,486 and $261,804 as of December 31, 2016 and 2015, respectively. The determination of the amount of such unrecognized deferred taxes is not practicable.

The Company’s income tax expense also includes the impact of provisions established for uncertain income tax positions determined in accordance with ASC topic 740, “Income Taxes”, as well as the related net interest. Tax exposures can involve complex issues and may require an extended resolution period. Although the Company believes that it has adequately reserved for its uncertain tax positions, no assurance can be given that the final tax outcome of these matters will not be different. The Company adjusts these reserves in light of changing facts and circumstances, such as the closing of a tax audit or the refinement of an estimate. To the extent that the final tax outcome of these matters differs from the amounts recorded, such differences will impact the income tax expense in the period in which such determination is made.

The following table summarizes the activity related to the gross unrecognized tax benefits from January 1, 2016 through December 31, 2016



Balance as of January 1, 2016	$	2,797
Increases related to prior year tax positions	156
Decreases related to prior year tax positions	—
Increases related to current year tax positions	178
Decreases related to current year tax positions	—
Effect of exchange rate changes	(44		)
Balance as of December 31, 2016	$	3,087

The unrecognized tax benefits as of December 31, 2016 of $3,087, if recognized, would impact the effective tax rate.

The Company has recognized interest of $315 and $205 during the years ended December 31, 2016 and 2015, respectively, which is included in the income tax expense in the consolidated statements of income. As of December 31, 2016 and 2015, the Company has accrued interest and penalties of $1,553 and $1,269 relating to unrecognized tax benefits.

Stock Based Compensation

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Based Compensation

On June 19, 2015, at the Company’s 2015 Annual Meeting of Stockholders, the Company's stockholders approved the 2015 Plan, which amended and restated the 2006 Omnibus Award Plan to, among other things, increased the total number of shares reserved for grants of awards under the 2015 Plan by 1,700,000 shares. As of December 31, 2016, the Company had 1,894,867 shares available for grant under the 2015 Plan.

Under the 2015 Plan, the Compensation Committee (the “Committee”) may grant awards of non-qualified stock options, incentive stock options, stock appreciation rights, restricted stock, restricted stock units, stock bonus awards, performance based compensation awards (including cash bonus awards and market condition based awards) or any combination of the foregoing.

The Committee determines which employees are eligible to receive the equity awards, the number of equity awards to be granted, the exercise price, the vesting period and the exercise period. The vesting period for the equity award issued is determined on the date of the grant and is non-transferable during the life of the equity award. The majority of options expire ten years from the date of grant. The equity awards generally vest proportionally over a period of four years from the date of grant, unless specified otherwise.

The Company applies the provisions of ASC 718, to account for its stock based compensation, using the modified prospective method of transition. Under the provisions of this guidance, the estimated fair value of share-based awards granted under stock incentive plans is recognized as compensation expense over the vesting period.

The following costs related to the Company’s stock-based compensation plan are included in the consolidated statements of income:



	Year ended December 31,
	2016		2015		2014
Cost of revenue	$	3,664	$	2,895	$	2,290
General and administrative expenses	8,372		6,077		4,350
Selling and marketing expenses	7,734		7,075		4,371
Total	$	19,770	$	16,047	$	11,011

Stock Options

The fair value of each stock option granted to employees is estimated on the date of grant using the Black-Scholes option-pricing model.

The Company does not anticipate paying any cash dividends in the foreseeable future and therefore uses an expected dividend yield of zero in the option valuation model. The Company is required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. The Company uses historical data to estimate pre-vesting option forfeitures and records stock-based compensation expense only for those awards that are expected to vest. All stock-based payment awards are amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods.

Stock option activity under the Company’s stock plans is shown below:



	Number of Options		Weighted- Average Exercise Price		Aggregate Intrinsic Value		Weighted- Average Remaining Contractual Life (Years)
Outstanding at December 31, 2015	1,210,141		$	16.31	$	34,638	3.50
Granted	—		—
Exercised	(398,239	)	16.32
Forfeited	—		—
Outstanding at December 31, 2016	811,902		$	16.31	$	27,718	2.96
Vested and exercisable at December 31, 2016	811,902		$	16.31	$	27,718	2.96

The unrecognized compensation cost for unvested options as of December 31, 2016 is nil. The Company did not grant any options during the years ended December 31, 2016 and 2015. The weighted-average fair value of options granted during the year ended December 31, 2014 was $9.77. The total grant date fair value of options vested during the years ended December 31, 2016, 2015 and 2014 was $706, $1,228 and $2,112, respectively. The aggregate intrinsic value of options exercised during the years ended December 31, 2016, 2015 and 2014 was $12,911, $4,413 and $5,757, respectively.

The following table summarizes the status of the Company’s stock options outstanding, vested and exercisable at December 31, 2016:



	Options Outstanding			Options Vested and Exercisable
Range of Exercise Prices	Shares	Weighted- Average Exercise Price		Shares	Weighted- Average Exercise Price
$8.00 to $15.00	362,134	$	9.31	362,134	$	9.31
$15.01 to $21.00	194,515	18.84		194,515	18.84
$21.01 to $28.00	255,253	24.30		255,253	24.30
Total	811,902	$	16.31	811,902	$	16.31

Restricted Stock and Restricted Stock Units

An award of restricted stock is a grant of shares subject to conditions and restrictions set by the Committee. The grant or the vesting of an award of restricted stock may be conditioned upon service to the Company or its affiliates or upon the attainment of performance goals or other factors, as determined in the discretion of the Committee. The Committee may also, in its discretion, provide for the lapse of restrictions imposed upon an award of restricted stock. Holders of an award of restricted stock may have, with respect to the restricted stock granted, all of the rights of a stockholder, including the right to vote and to receive dividends.

The Committee is authorized to award restricted stock units to participants. The Committee establishes the terms, conditions and restrictions applicable to each award of restricted stock units, including the time or times at which restricted stock units will be granted or vested and the number of units to be covered by each award. The terms and conditions of each restricted stock award will be reflected in a restricted stock unit agreement.

Any cash or in-kind dividends paid with respect to unvested shares of restricted stock and restricted stock units are withheld by the Company and paid to the holder of such shares of restricted stock, without interest, only if and when such shares of restricted stock and restricted stock units vest. Any unvested shares of restricted stock and restricted stock units are immediately forfeited without consideration upon the termination of holder’s employment with the Company or its affiliates. Accordingly, the Company’s unvested restricted stock and restricted stock units do not include non-forfeitable rights to dividends or dividend equivalents and are therefore not considered as participating securities for purposes of earnings per share calculations pursuant to the two-class method.

Restricted stock and restricted stock unit activity under the Company’s stock plans is shown below:



	Restricted Stock				Restricted Stock Units
	Number		Weighted- Average Intrinsic Value		Number		Weighted- Average Intrinsic Value
Outstanding at December 31, 2015^{(1) (2)}	134,934		$	35.28	1,228,287		$	30.06
Granted	127,063		49.08		468,370		48.94
Vested	(15,057	)	34.61		(358,712	)	28.55
Forfeited	—		—		(81,657	)	32.38
Outstanding at December 31, 2016⁽¹⁾	246,940		$	42.42	1,256,288		$	37.38

(1) Excludes 19,874 and 21,364 restricted stock units vested during the years ended December 31, 2016 and 2015, respectively. As of December 31, 2016 and 2015 restricted stock units vested for which the underlying common stock is yet to be issued are 135,054 and 149,364, respectively.

(2) Includes adjustment of 5,296 forfeited shares in 2015.

The fair value of restricted stock and restricted stock units is generally the market price of the Company’s shares on the date of grant. As of December 31, 2016, unrecognized compensation cost of $43,016 is expected to be expensed over a weighted average period of 2.70 years. The weighted-average fair value of restricted stock and restricted stock units granted during the years ended December 31, 2016, 2015 and 2014 was $48.97, $35.18 and $26.47, respectively. The total grant date fair value of restricted stock and restricted stock units vested during the years ended December 31, 2016, 2015 and 2014 was $10,761, $12,620 and $11,393, respectively.

During the year ended December 31, 2016, the Company granted 33,459 and 93,604 restricted stock in connection with its Liss and Datasource acquisitions, respectively, and 21,987 restricted stock units in connection with its IQR acquisition. During the year ended December 31, 2015, the Company granted 122,131 restricted stock in connection with its RPM acquisition. The fair value of these grants will be recognized as compensation expense on a straight-line basis over the vesting term.

Performance Based Stock Awards

Under the 2015 Plan, the Company grants performance-based restricted stock units (“PRSUs”) to executive officers and other specified employees. 50% of the PRSUs cliff vest at the end of a three-year period based on a revenue target for the third year (“PUs”). However, for PUs granted in 2014 and 2015, up to one-third of the PUs may be earned based on the Company’s revenue performance in each of the first two years against annual revenue targets in those years. The total amount of PUs that the recipient earns based on these performance criteria will be the greater of (i) the PUs earned in the year of vesting and (ii) the sum of the earned PUs during the first two years. The remaining 50% is based on a market condition (“MUs”) that is contingent on the Company meeting or exceeding the total shareholder return relative to a group of peer companies specified under the program measured over a three-year performance period. The award recipient may earn up to two hundred percent (200%) of the PRSUs granted based on the actual achievement of targets.

The fair value of each PU was determined based on the market price of one common share on the date of grant, and the associated compensation expense was calculated on the basis that performance targets at 100% of the PUs is probable of being achieved. The compensation expense for the PUs is recognized on a straight-line basis over the service period, which is through the end of the third year. Over this period, the number of shares that will be issued will be adjusted upward or downward based upon the probability of achievement of the performance targets. The ultimate number of shares issued and the related compensation cost recognized as an expense will be based on a comparison of the final performance metrics to the specified targets.

The grant date fair value for the MUs was determined using a Monte Carlo simulation model and the related compensation expense will be expensed on a straight-line basis over the vesting period. All compensation expense related to the MUs will be recognized if the requisite performance period is fulfilled, even if the market condition is not achieved.

The Monte-Carlo simulation model simulates a range of possible future stock prices and estimates the probabilities of the potential payouts. This model also incorporates the following ranges of assumptions:


•	The historical volatilities are used over the most recent three-year period for the components of the peer group.


•	The risk-free interest rate is based on the U.S. Treasury rate assumption commensurate with the three-year performance period


•	Since the plan stipulates that the awards are based upon the TSR of the Company and the components of the peer group, it is assumed that the dividends get reinvested in the issuing entity on a continuous basis.


•	The correlation coefficients are used to model the way in which each entity tends to move in relation to each other are based upon the price data used to calculate the historical volatilities.

The fair value of each MU granted to employees is estimated on the date of grant using the following weighted average assumptions:



	Year ended December 31,
	2016		2015		2014
Dividend yield	—		—		—
Expected life (years)	2.85		2.84		2.88
Risk free interest rate	0.88	%	0.98	%	0.65	%
Volatility	28.0	%	30.3	%	30.4	%

Performance restricted stock unit activity under the Company’s stock plans is shown below:



	Revenue Based PRSUs				Market Condition Based PRSUs
	Number		Weighted Avg Fair Value		Number		Weighted Avg Fair Value
Outstanding at December 31, 2015	107,213		$	30.88	207,212		$	38.80
Granted	59,861		48.57		59,859		67.94
Addition due to achievement of higher-than-target performance*	307		25.63		44,100		33.60
Vested	(44,407	)	25.63		(88,200	)	33.60
Forfeited	(7,800	)	36.51		(7,800	)	54.16
Outstanding at December 31, 2016	115,174		$	41.70	215,171		$	47.42

* Represents additional shares issued in respect of MUs granted in February 2014 due to the achievement of higher-than-target performance.

As of December 31, 2016, unrecognized compensation cost of $8,603 is expected to be expensed over a weighted average period of 1.59 years.

Subsequent to December 31, 2016, the Company granted approximately 495,000 PRSUs and restricted stock units to its employees.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Capital Commitments At December 31, 2016, the Company has committed to spend approximately $15,400 under agreements to purchase property, plant and equipment. This amount is net of capital advances paid in respect of these purchases. Other Commitments Certain units of the Company’s Indian subsidiaries were established as 100% Export-Oriented units or under the Software Technology Parks of India (“STPI”) scheme promulgated by the Government of India. These units are exempt from customs, central excise duties, and levies on imported and indigenous capital goods, stores, and spares. The Company has undertaken to pay custom duties, service taxes, levies, and liquidated damages payable, if any, in respect of imported and indigenous capital goods, stores and spares consumed duty free, in the event that certain terms and conditions are not fulfilled. The Company’s management believes, however, that these units have in the past satisfied and will continue to satisfy the required conditions. The Company’s operations centers in the Philippines are registered with the Philippine Economic Zone Authority (“PEZA”). The registration provides the Company with certain fiscal incentives on the import of capital goods and requires Exl Philippines to meet certain performance and investment criteria. The Company’s management believes that these centers have in the past satisfied and will continue to satisfy the required criteria. Contingencies U.S. and Indian transfer pricing regulations require that any international transaction involving associated enterprises be at an arm’s-length price. Accordingly, the Company determines the appropriate pricing for the international transactions among its associated enterprises on the basis of a detailed functional and economic analysis involving benchmarking against transactions among entities that are not under common control. The tax authorities have jurisdiction to review this arrangement and in the event that they determine that the transfer price applied was not appropriate, the Company may incur increased tax liability, including accrued interest and penalties. The Company is currently involved in disputes with the Indian tax authorities over the application of certain of its transfer pricing policies for some of its subsidiaries. Further, the Company and a U.S. subsidiary are engaged in tax litigation with the income-tax authorities in India on the issue of permanent establishment. The aggregate disputed amount demanded by Income tax authorities from the Company related to its transfer pricing issues for tax years 2003 to 2014 and its permanent establishment issues for tax years 2003 to 2007 as of December 31, 2016 and 2015 is $17,963 and $21,360, respectively, of which the Company has made payments or provided bank guarantee to the extent $8,640 and $14,668, respectively. Amounts paid as deposits in respect of such assessments aggregating to $6,690 and $12,665 as of December 31, 2016 and 2015, respectively, are included in “Other assets” and amounts deposited for bank guarantees aggregating to $1,950 and $2,003 as of December 31, 2016 and 2015, respectively, are included in “Restricted cash” in the non-current assets section of the Company’s consolidated balance sheets. Based on advice from its Indian tax advisors, the facts underlying the Company’s position and its experience with these types of assessments, the Company believes that the probability that it will ultimately be found liable for these assessments is remote and accordingly has not accrued any amount with respect to these matters in its consolidated financial statements. The Company does not expect any impact from these assessments on its future income tax expense. It is possible that the Company might receive similar orders or assessments from tax authorities for subsequent years. Accordingly even if these disputes are resolved, the Indian tax authorities may still serve additional orders or assessments.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Basis of Preparation and Principles of Consolidation

Use of Estimates

In accordance with its policy, the Company reviews the estimated useful lives of its property, plant and equipment on an ongoing basis.

Foreign Currency Translation

Revenue Recognition

Cash and Cash Equivalents and Restricted Cash

Investments

Accounts Receivable

Property, plant and equipment

Software Development Costs

Business Combinations, Goodwill and Other Intangible Assets

The Company’s definite lived intangible assets are amortized over their estimated useful lives as listed below using a straight-line method:



Customer relationships	3-15 years
Leasehold benefits	3-8 years
Developed technology	5-10 years
Non-compete agreements	1-5 years
Trade names and trademarks	3-10 years

Impairment of long-lived assets

Derivative Financial Instruments

Employee Benefits

Share-Based Compensation

Income Taxes

Financial Instruments and Concentration of Credit Risk

Lease Obligations

Government Grants

Accumulated Other Comprehensive Loss

Recent Accounting Pronouncements

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary of Lived Intangible Assets Amortized over their Estimated Useful Lives

The Company’s definite lived intangible assets are amortized over their estimated useful lives as listed below using a straight-line method:



Customer relationships	3-15 years
Leasehold benefits	3-8 years
Developed technology	5-10 years
Non-compete agreements	1-5 years
Trade names and trademarks	3-10 years

Summary of Accumulated Other Comprehensive Loss

The balances as of December 31, 2016 and 2015 are as follows:



	December 31, 2016			December 31, 2015
Cumulative currency translation adjustments	$	(77,299	)	$	(68,063	)
Unrealized gain on cash flow hedges, net of taxes of $1,207 and $662	2,740			824
Retirement benefits, net of taxes of ($342) and ($201)	(498		)	(86		)
Accumulated other comprehensive loss	$	(75,057	)	$	(67,325	)

Segment & Geographical Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Revenues and Cost of Revenues for Company's Reportable Segments

Revenues and cost of revenues for each of the years ended December 31, 2016, 2015 and 2014, for each of the reportable segments, are as follows:



	Year ended December 31, 2016
	Insurance		Healthcare		TT&L		F&A		Analytics		All Other		Total

Revenues, net	$	206,327	$	68,656	$	69,366	$	79,416	$	165,734	$	96,489	$	685,988
Cost of revenues (exclusive of depreciation and amortization)	146,203		44,098		41,962		48,302		106,341		61,050		447,956
Gross profit	$	60,124	$	24,558	$	27,404	$	31,114	$	59,393	$	35,439	$	238,032
Operating expenses													173,810
Foreign exchange gain, interest expense and other income, net													19,662
Income tax expense													22,151
Net income													$	61,733



	Year ended December 31, 2015
	Insurance		Healthcare		TT&L		F&A		Analytics		All Other		Total

Revenues, net	$	199,878	$	55,209	$	62,264	$	78,504	$	122,151	$	110,486	$	628,492
Cost of revenues (exclusive of depreciation and amortization)	134,196		37,224		37,506		46,846		78,838		68,307		402,917
Gross profit	$	65,682	$	17,985	$	24,758	$	31,658	$	43,313	$	42,179	$	225,575
Operating expenses													158,232
Foreign exchange gain, interest expense and other income, net													8,433
Income tax expense													24,211
Net income													$	51,565



	Year ended December 31, 2014
	Insurance		Healthcare		TT&L		F&A		Analytics		All Other		Total

Revenues, net	$	151,308	$	42,848	$	47,492	$	92,013	$	65,615	$	100,002	$	499,278
Cost of revenues (exclusive of depreciation and amortization)	107,026		29,598		29,945		56,770		46,042		63,154		332,535
Gross profit	$	44,282	$	13,250	$	17,547	$	35,243	$	19,573	$	36,848	$	166,743
Operating expenses													132,703
Foreign exchange gain, interest expense and other income, net													3,598
Income tax expense													5,193
Net income													$	32,445

Net revenues of the Company by service type, were as follows:



	Year ended December 31,
	2016		2015		2014
BPM and related services ⁽¹⁾	$	520,254	$	506,341	$	433,663
Analytics services	165,734		122,151		65,615
Total	$	685,988	$	628,492	$	499,278

(1) BPM and related services include revenues of all the operating segments other than Analytics. See reportable segment disclosure above.

Revenues Based on Geographical Information

The Company attributes the revenues to regions based upon the location of its customers.



	Year ended December 31,
	2016		2015		2014
Revenues, net
United States	$	554,945	$	496,418	$	368,870
Non-United States
United Kingdom	109,905		108,868		101,789
Rest of World	21,138		23,206		28,619
Total Non-United States	131,043		132,074		130,408
	$	685,988	$	628,492	$	499,278

Property, Plant & Equipment, Net Based on Geographical Information

Property, plant and equipment by geographic area, were as follows:



	December 31, 2016		December 31, 2015
Property, plant and equipment, net
India	$	23,362	$	23,415
United States	10,809		10,680
Philippines	11,900		11,285
Rest of World	2,958		2,611
	$	49,029	$	47,991

Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Results

Summarized quarterly results for the years ended December 31, 2016 and 2015 are as follows:



	Three months ended 2016								Year ended
	March 31		June 30		September 30		December 31		December 31, 2016

Revenues, net	$	167,036	$	170,478	$	171,200	$	177,274	$	685,988
Gross profit	$	58,657	$	58,452	$	59,433	$	61,490	$	238,032
Net income	$	13,820	$	16,375	$	16,050	$	15,488	$	61,733
Earnings Per Share:
Basic*	$	0.41	$	0.49	$	0.48	$	0.46	$	1.84
Diluted*	$	0.40	$	0.47	$	0.46	$	0.45	$	1.79
Weighted-average number of shares used in computing earnings per share:
Basic*	33,380,028		33,621,444		33,624,401		33,638,170		33,566,367
Diluted*	34,351,657		34,510,400		34,675,485		34,714,308		34,563,319

Stock compensation expense	$	5,809	$	4,450	$	4,484	$	5,027	$	19,770
Amortization of intangibles	$	2,715	$	2,718	$	2,848	$	3,592	$	11,873
	Three months ended 2015								Year ended
	March 31		June 30		September 30		December 31		December 31, 2015

Revenues, net	$	143,510	$	155,621	$	163,503	$	165,858	$	628,492
Gross profit	$	50,385	$	55,143	$	60,305	$	59,742	$	225,575
Net income	$	9,567	$	12,074	$	15,162	$	14,762	$	51,565
Earnings Per Share:
Basic^*	$	0.29	$	0.36	$	0.46	$	0.44	$	1.55
Diluted^*	$	0.28	$	0.35	$	0.44	$	0.43	$	1.51
Weighted-average number of shares used in computing earnings per share:
Basic*	33,236,259		33,417,079		33,307,312		33,231,716		33,298,104
Diluted*	34,051,971		34,207,973		34,180,635		34,272,731		34,178,340

Stock compensation expense	$	4,255	$	3,553	$	4,471	$	3,768	$	16,047
Amortization of intangibles	$	2,059	$	2,808	$	2,642	$	2,717	$	10,226

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the computation of basic and diluted earnings per share:



	Year ended December 31,
	2016		2015		2014
Numerators:
Net income	$	61,733	$	51,565	$	32,445
Denominators:
Basic weighted average common shares outstanding	33,566,367		33,298,104		32,804,606
Dilutive effect of share based awards	996,952		880,236		831,987
Diluted weighted average common shares outstanding	34,563,319		34,178,340		33,636,593
Earnings per share:
Basic	$	1.84	$	1.55	$	0.99
Diluted	$	1.79	$	1.51	$	0.96
Weighted average common shares considered anti-dilutive in computing diluted earnings per share	92,538		73,896		114,395

Other Income, net Other Income, net (Tables)

12 Months Ended

Dec. 31, 2016

Other Nonoperating Income (Expense) [Abstract]

Other Income, net

Other Income, net consists of the following:



	Year ended December 31,
	2016		2015		2014
Interest and dividend income	$	1,673	$	2,904	$	3,709
Gain on sale of mutual fund investments	8,087		3,902		—
Change in fair value of earn-out consideration	4,060		—		—
Other, net	1,588		221		263
Other income, net	$	15,408	$	7,027	$	3,972

Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment consist of the following:



	Estimated useful lives (Years)	December 31, 2016			December 31, 2015
Owned Assets:
Network equipment, computers and software	3-5	$	109,998		$	95,245
Leasehold improvements	3-8	31,192			28,603
Office furniture and equipment	3-8	15,426			14,000
Motor vehicles	2-5	580			540
Buildings	30	1,171			1,202
Land	-	766			787
Capital work in progress	-	4,964			3,140
		164,097			143,517
Less: Accumulated depreciation and amortization		(115,568		)	(96,079		)
		$	48,529		$	47,438
Assets under capital leases:
Leasehold improvements		$	854		$	877
Office furniture and equipment		133			136
Motor vehicles		810			806
		1,797			1,819
Less: Accumulated depreciation and amortization		(1,297		)	(1,266		)
		$	500		$	553
Property, Plant and Equipment, net		$	49,029		$	47,991

Business Combinations, Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Business Combinations [Abstract]

Summary of Purchase Price Allocation for Acquisitions

The Company has preliminarily allocated the purchase price to the net tangible and intangible assets based on their fair values as set forth below:



	Amount
Tangible assets	$	3,582
Tangible liabilities	(1,503		)
Identifiable intangible assets:
Customer relationships	6,340
Developed technology	520
Trade names and trademarks	380
Goodwill	10,999
Total purchase price	$	20,318

During the three months ended December 31, 2016, the Company finalized its purchase price allocation for the acquisition based on their fair values as set forth below:



	Amount
Tangible assets	$	1,449
Tangible liabilities	(420		)
Deferred tax liability	(836		)
Identifiable intangible assets:
Customer relationships	2,300
Goodwill	2,599
Total purchase price	$	5,092

During the three months ended December 31, 2016, the Company finalized its purchase price allocation for the acquisition based on their fair values as set forth below:



	Amount
Tangible assets	$	517
Tangible liabilities	(993		)
Deferred tax liability	(643		)
Identifiable intangible assets:
Customer relationships	1,918
Developed technology	1,571
Trade names and trademarks	231
Goodwill	2,510
Total purchase price	$	5,111

Summary of Company's Goodwill

The following table sets forth details of the Company’s goodwill balance as of December 31, 2016:



	Insurance			Healthcare		TT&L			F&A			Analytics		All Other		Total
Balance as at January 1, 2015	$	35,824		$	19,276	$	13,833		$	48,555		$	16,785	$	5,326	$	139,599
Acquisitions	—			—		—			—			33,155		—		33,155
Currency translation adjustments	—			—		(555		)	(664		)	—		—		(1,219		)
Balance as at December 31, 2015	$	35,824		$	19,276	$	13,278		$	47,891		$	49,940	$	5,326	$	171,535
Acquisitions	2,510			—		—			—			13,598		—		16,108
Currency translation adjustments	(224		)	—		(295		)	(354		)	—		—		(873		)
Balance as at December 31, 2016	$	38,110		$	19,276	$	12,983		$	47,537		$	63,538	$	5,326	$	186,770

Schedule of Finite-Lived Intangible Assets

Information regarding the Company’s intangible assets is set forth below:



	As of December 31, 2016
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	75,181	$	(32,968	)	$	42,213
Leasehold benefits	2,715		(2,247		)	468
Developed technology	14,186		(6,468		)	7,718
Non-compete agreements	2,045		(1,612		)	433
Trade names and trademarks	5,360		(3,322		)	2,038
	$	99,487	$	(46,617	)	$	52,870
Indefinite-lived intangible assets:
Trade names and trademarks	$	900	$	—		$	900
Total intangible assets	$	100,387	$	(46,617	)	$	53,770



	As of December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	64,816	$	(24,215	)	$	40,601
Leasehold benefits	2,789		(2,109		)	680
Developed technology	12,234		(4,363		)	7,871
Non-compete agreements	2,045		(1,451		)	594
Trade names and trademarks	4,770		(2,683		)	2,087
	$	86,654	$	(34,821	)	$	51,833
Indefinite-lived intangible assets:
Trade names and trademarks	$	900	$	—		$	900
Total intangible assets	$	87,554	$	(34,821	)	$	52,733

Schedule of Indefinite-Lived Intangible Assets

Information regarding the Company’s intangible assets is set forth below:



	As of December 31, 2016
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	75,181	$	(32,968	)	$	42,213
Leasehold benefits	2,715		(2,247		)	468
Developed technology	14,186		(6,468		)	7,718
Non-compete agreements	2,045		(1,612		)	433
Trade names and trademarks	5,360		(3,322		)	2,038
	$	99,487	$	(46,617	)	$	52,870
Indefinite-lived intangible assets:
Trade names and trademarks	$	900	$	—		$	900
Total intangible assets	$	100,387	$	(46,617	)	$	53,770



	As of December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	64,816	$	(24,215	)	$	40,601
Leasehold benefits	2,789		(2,109		)	680
Developed technology	12,234		(4,363		)	7,871
Non-compete agreements	2,045		(1,451		)	594
Trade names and trademarks	4,770		(2,683		)	2,087
	$	86,654	$	(34,821	)	$	51,833
Indefinite-lived intangible assets:
Trade names and trademarks	$	900	$	—		$	900
Total intangible assets	$	87,554	$	(34,821	)	$	52,733

Estimated Amortization of Intangible Assets



Estimated amortization of intangible assets during the year ending December 31:
2017	$	13,910
2018	12,156
2019	11,257
2020	4,111
2021 and thereafter	11,436
Total	$	52,870

Accrued expenses and other current liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Accounts Payable and Accrued Liabilities, Current [Abstract]

Schedule of Accrued Liabilities

Accrued expenses and other current liabilities consists of the following:



	December 31, 2016		December 31, 2015
Accrued expenses	$	30,690	$	26,238
Derivative instruments	1,430		1,226
Client liability account	4,005		2,217
Other current liabilities	7,139		4,569
Accrued expenses and other current liabilities	$	43,264	$	34,250

Non-current liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Liabilities, Noncurrent [Abstract]

Other Noncurrent Liabilities

Non-current liabilities consists of the following:



	December 31, 2016		December 31, 2015
Derivative instruments	$	828	$	1,132
Unrecognized tax benefits	3,640		3,066
Deferred rent	7,237		6,515
Retirement benefits	1,977		1,441
Other non-current liabilities	1,137		5,501
Non-current liabilities	$	14,819	$	17,655

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value

The assets and liabilities measured at fair value on recurring basis are summarized below:



As of December 31, 2016	Level 1		Level 2		Level 3		Total
Assets
Money market and mutual funds*	$	118,185	$	—	$	—	$	118,185
Derivative financial instruments	—		6,319		—		6,319
Total	$	118,185	$	6,319	$	—	$	124,504
Liabilities
Derivative financial instruments	$	—	$	2,258	$	—	$	2,258
Total	$	—	$	2,258	$	—	$	2,258

As of December 31, 2015	Level 1		Level 2		Level 3		Total
Assets
Money market and mutual funds*	$	118,478	$	—	$	—	$	118,478
Derivative financial instruments	—		4,184		—		4,184
Total	$	118,478	$	4,184	$	—	$	122,662
Liabilities
Derivative financial instruments	$	—	$	2,358	$	—	$	2,358
Fair value of earn-out consideration	—		—		4,060		4,060
Total	$	—	$	2,358	$	4,060	$	6,418

* Included as a part of cash and cash equivalents.

Derivatives and Hedge Accounting (Tables)

12 Months Ended

Dec. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Fair Value of Foreign Currency Exchange Contracts

The following tables set forth the fair value of the foreign currency exchange contracts and their location on the consolidated financial statements:

Derivatives designated as hedging instruments:



	December 31, 2016		December 31, 2015
Other current assets:
Foreign currency exchange contracts	$	3,211	$	2,664
Other assets:
Foreign currency exchange contracts	$	2,994	$	1,175
Accrued expenses and other current liabilities:
Foreign currency exchange contracts	$	1,430	$	1,226
Other non-current liabilities:
Foreign currency exchange contracts	$	828	$	1,132

Derivatives not designated as hedging instruments:



	December 31, 2016		December 31, 2015
Other current assets:
Foreign currency exchange contracts	$	113	$	345

Summary of Effect of Foreign Currency Exchange Contracts on Consolidated Statements of Income

The following tables set forth the effect of foreign currency exchange contracts on the consolidated statements of income for the years ended December 31, 2016 and 2015:



Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI on Derivative (Effective Portion)					Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Gain/ (Loss) Reclassified from AOCI into Income (Effective Portion)					Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	2016		2015				2016		2015				2016		2015
Foreign exchange contracts	$	3,895	$	(1,111	)	Foreign exchange gain/(loss)	$	1,434	$	(1,117	)	Foreign exchange gain/(loss)	$	—	$	—



Derivatives not designated as Hedging Instruments		Amount of Gain/(Loss) Recognized in Income on Derivatives
Derivatives not designated as Hedging Instruments	Location of Gain or (Loss) Recognized in Income on Derivatives	2016		2015
Foreign exchange contracts	Foreign exchange gain	$	4,790	$	862

Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Summary of Change in Projected Benefit Obligation

The following table sets forth the activity and the funded status of the Gratuity Plans and the amounts recognized in the Company’s consolidated financial statements at the end of the relevant periods:



	December 31,
	2016			2015
Change in projected benefit obligation:
Projected benefit obligation at the beginning of the year	$	7,909		$	7,563
Service cost	1,601			1,638
Interest cost	599			550
Benefits paid	(837		)	(851		)
Actuarial (gain)/loss	677			(609		)
Acquisition	47			—
Effect of exchange rate changes	(285		)	(382		)

Projected benefit obligation at the end of the year	$	9,711		$	7,909
Unfunded amount–non-current	$	1,977		$	1,441
Unfunded amount–current	2,094			1,545
Total accrued liability	$	4,071		$	2,986

Accumulated benefit obligation	$	6,533		$	5,537

Net Gratuity Cost

Net gratuity cost includes the following components:



	Year ended December 31,
	2016			2015			2014
Service cost	$	1,601		$	1,638		$	1,523
Interest cost	599			550			559
Expected return on plan assets	(416		)	(385		)	(172		)
Actuarial loss	90			211			149
Net gratuity cost	$	1,874		$	2,014		$	2,059

Summary of Components Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss that have not been recognized as components of net gratuity cost in the statement of income as of December 31, 2016 and 2015 is as follows:



	December 31,
	2016		2015
Net actuarial loss	$	489	$	77
Net prior service cost	9		9
Accumulated other comprehensive loss, net of tax	$	498	$	86

Summary of Weighted Average Actuarial Assumptions

The weighted average actuarial assumptions used to determine benefit obligations and net periodic gratuity cost are:



	December 31,
	2016		2015		2014
Discount rate	6.8	%	7.8	%	8.0	%
Rate of increase in compensation levels	9.2	%	8.4	%	8.2	%
Expected long term rate of return on plan assets per annum	9.0	%	9.0	%	9.0	%

Summary of Expected Benefit Payments



Expected benefit payments during the year ending December 31,
2017	$	2,782
2018	$	2,407
2019	$	2,146
2020	$	1,960
2021	$	1,785
2022 to 2026	$	5,238

Change in Plan Assets



Change in Plan Assets
Plan assets at January 1, 2015	$	4,752
Actual return	355
Employer contribution	903
Benefits paid*	(851		)
Effect of exchange rate changes	(236		)
Plan assets December 31, 2015	$	4,923
Actual return	450
Employer contribution	1,242
Benefits paid*	(837		)
Effect of exchange rate changes	(138		)
Plan assets December 31, 2016	$	5,640

* All Benefits payments were made through the plan assets during the year ended December 31, 2016 and December 31, 2015.

Leases (Tables)

12 Months Ended

Dec. 31, 2016

Leases [Abstract]

Future Minimum Lease Payments under Capital Leases



Year ending December 31:
2017	$	289
2018	186
2019	117
2020	47
Total minimum lease payments	639
Less: amount representing interest	107
Present value of minimum lease payments	532
Less: current portion	232
Long term capital lease obligation	$	300

Future Minimum Lease Payments under Non-Cancelable Operating Lease Agreements Expiring After December 31, 2016



Year ending December 31:
2017	$	9,586
2018	8,119
2019	5,895
2020	4,085
2021	1,950
2022 and thereafter	1,398
Future minimum lease payment	$	31,033

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Summary of Components of Income Before Income Taxes

The components of income before income taxes consist of the following:



	Year ended December 31,
	2016		2015		2014
Domestic	$	12,652	$	25,045	$	(4,785	)
Foreign	71,232		50,731		42,423
	$	83,884	$	75,776	$	37,638

Summary of Income Tax Provision/(Benefit) Relating to Continuing Operations

The income tax expense consists of the following:



	Year ended December 31,
	2016			2015			2014
Current provision/(benefit):
Domestic	$	7,107		$	9,951		$	(1,069	)
Foreign	18,428			12,022			6,186
	$	25,535		$	21,973		$	5,117
Deferred provision/(benefit):
Domestic	$	(2,506	)	$	3,041		$	535
Foreign	(878		)	(803		)	(459		)
	$	(3,384	)	$	2,238		$	76
Income tax expense	$	22,151		$	24,211		$	5,193

Summary of Effective Income Tax Rate Differs from Amount Computed by Applying U.S. Federal Statutory Income Tax Rate to Income Before Income Taxes

The effective income tax rate differs from the amount computed by applying the U.S. federal statutory income tax rate to income before income taxes approximately as follows:



	December 31,
	2016			2015			2014
Expected tax expense	$	29,361		$	26,521		$	12,797
Change in valuation allowance	22			19			64
Impact of tax holiday	(4,027		)	(2,991		)	(3,208		)
Foreign tax rate differential	(2,716		)	(2,797		)	(3,327		)
Deferred tax (benefit)/provision	(878		)	(803		)	(459		)
Unrecognized tax benefits and interest	495			324			(1,846		)
State taxes, net of Federal taxes	202			1,327			593
Non-deductible expenses	144			26			15
Prior year tax expense/(benefit)	—			2,450			—
Other	(452		)	135			564
Tax expense	$	22,151		$	24,211		$	5,193

Summary of Components of Deferred Tax Balances

The components of the deferred tax balances as of December 31, 2016 and 2015 are as follows:



	December 31,
	2016			2015
Deferred tax assets:
Tax credit carry forward	$	4,806		$	5,164
Depreciation and amortization	3,765			3,777
Share-based compensation	10,385			8,099
Accrued employee costs and other expenses	5,130			3,079
Net operating loss carry forwards	1,856			3,746
Unrealized exchange loss	2,099			1,136
Deferred rent	1,307			1,292
Others	484			62
	$	29,832		$	26,355
Valuation allowance	(454		)	(595		)
Deferred tax assets	$	29,378		$	25,760
Deferred tax liabilities:
Unrealized exchange gain	$	1,414		$	848
Intangible assets	13,165			11,163
Deferred tax liabilities:	$	14,579		$	12,011
Net deferred tax assets	$	14,799		$	13,749

Summary of Activity Related to Gross Unrecognized Tax Benefits

The following table summarizes the activity related to the gross unrecognized tax benefits from January 1, 2016 through December 31, 2016



Balance as of January 1, 2016	$	2,797
Increases related to prior year tax positions	156
Decreases related to prior year tax positions	—
Increases related to current year tax positions	178
Decreases related to current year tax positions	—
Effect of exchange rate changes	(44		)
Balance as of December 31, 2016	$	3,087

Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

The following costs related to the Company’s stock-based compensation plan are included in the consolidated statements of income:



	Year ended December 31,
	2016		2015		2014
Cost of revenue	$	3,664	$	2,895	$	2,290
General and administrative expenses	8,372		6,077		4,350
Selling and marketing expenses	7,734		7,075		4,371
Total	$	19,770	$	16,047	$	11,011

Stock Based Compensation Stock Option Activity

Stock option activity under the Company’s stock plans is shown below:



	Number of Options		Weighted- Average Exercise Price		Aggregate Intrinsic Value		Weighted- Average Remaining Contractual Life (Years)
Outstanding at December 31, 2015	1,210,141		$	16.31	$	34,638	3.50
Granted	—		—
Exercised	(398,239	)	16.32
Forfeited	—		—
Outstanding at December 31, 2016	811,902		$	16.31	$	27,718	2.96
Vested and exercisable at December 31, 2016	811,902		$	16.31	$	27,718	2.96

Company's Stock Options Outstanding and Stock Options Vested and Exercisable

The following table summarizes the status of the Company’s stock options outstanding, vested and exercisable at December 31, 2016:



	Options Outstanding			Options Vested and Exercisable
Range of Exercise Prices	Shares	Weighted- Average Exercise Price		Shares	Weighted- Average Exercise Price
$8.00 to $15.00	362,134	$	9.31	362,134	$	9.31
$15.01 to $21.00	194,515	18.84		194,515	18.84
$21.01 to $28.00	255,253	24.30		255,253	24.30
Total	811,902	$	16.31	811,902	$	16.31

Weighted Average Valuation Assumptions for Market Condition Performance Restricted Stock Units

The fair value of each MU granted to employees is estimated on the date of grant using the following weighted average assumptions:



	Year ended December 31,
	2016		2015		2014
Dividend yield	—		—		—
Expected life (years)	2.85		2.84		2.88
Risk free interest rate	0.88	%	0.98	%	0.65	%
Volatility	28.0	%	30.3	%	30.4	%

Restricted Stock Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Restricted Stock Activity Under Company's Stock Plans

Restricted stock and restricted stock unit activity under the Company’s stock plans is shown below:



	Restricted Stock				Restricted Stock Units
	Number		Weighted- Average Intrinsic Value		Number		Weighted- Average Intrinsic Value
Outstanding at December 31, 2015^{(1) (2)}	134,934		$	35.28	1,228,287		$	30.06
Granted	127,063		49.08		468,370		48.94
Vested	(15,057	)	34.61		(358,712	)	28.55
Forfeited	—		—		(81,657	)	32.38
Outstanding at December 31, 2016⁽¹⁾	246,940		$	42.42	1,256,288		$	37.38

(2) Includes adjustment of 5,296 forfeited shares in 2015.

Performance Based Stock Awards

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Restricted Stock Activity Under Company's Stock Plans

Performance restricted stock unit activity under the Company’s stock plans is shown below:



	Revenue Based PRSUs				Market Condition Based PRSUs
	Number		Weighted Avg Fair Value		Number		Weighted Avg Fair Value
Outstanding at December 31, 2015	107,213		$	30.88	207,212		$	38.80
Granted	59,861		48.57		59,859		67.94
Addition due to achievement of higher-than-target performance*	307		25.63		44,100		33.60
Vested	(44,407	)	25.63		(88,200	)	33.60
Forfeited	(7,800	)	36.51		(7,800	)	54.16
Outstanding at December 31, 2016	115,174		$	41.70	215,171		$	47.42

* Represents additional shares issued in respect of MUs granted in February 2014 due to the achievement of higher-than-target performance.

Summary of Significant Accounting Policies - Summary of Revenues and Reimbursements Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Revenues and reimbursements	$ 21,812	$ 18,848	$ 19,606

Summary of Significant Accounting Policies - Investments Additional Information (Details)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Investments maturity period	Investments with original maturities greater than ninety days but less than twelve months are classified as short-term investments. Investments with maturities greater than twelve months from the balance sheet date are classified as long-term investments.

Summary of Significant Accounting Policies - Accounts Receivable Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Allowance for doubtful accounts	$ 241	$ 154
Unbilled accounts receivable	$ 34,785	$ 29,589

Summary of Significant Accounting Policies - Summary of Lived Intangible Assets Amortized over their Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2016
Customer relationships \| Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	3 years
Customer relationships \| Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	15 years
Leasehold benefits \| Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	3 years
Leasehold benefits \| Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	8 years
Developed technology \| Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	5 years
Developed technology \| Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	10 years
Non-compete agreements \| Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	1 year
Non-compete agreements \| Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	5 years
Trade names and trademarks \| Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	3 years
Trade names and trademarks \| Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets (in years)	10 years

Summary of Significant Accounting Policies - Share-Based Compensation Additional Information (Details)		12 Months Ended
	Jun. 19, 2015	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
Revenue Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target shares an employee can earn (as a percent)		200.00%
Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based percentage (as a percent)		100.00%
Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan) \| Revenue Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based percentage (as a percent)		50.00%
Vesting period (in years)		3 years
Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan) \| Market Condition Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based percentage (as a percent)		50.00%
Vesting period (in years)		3 years
Maximum \| Revenue Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target shares an employee can earn (as a percent)		200.00%
Maximum \| Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan) \| Market Condition Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target shares an employee can earn (as a percent)		200.00%

Summary of Significant Accounting Policies - Summary of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumulative currency translation adjustments	$ (77,299)	$ (68,063)
Unrealized gain on cash flow hedges, net of taxes of $1,207 and $662	2,740	824
Retirement benefits, net of taxes of ($342) and ($201)	(498)	(86)
Accumulated other comprehensive loss	(75,057)	(67,325)
Taxes on unrealized gain on cash flow hedges	1,207	662
Taxes on retirement benefits	$ (342)	$ (201)

Segment & Geographical Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016 operating_segment	Dec. 31, 2015 Segment
Segment Reporting [Abstract]
Number of operating segments	8
Number of operating segments, operations management	6
Number of operating segments, finance and accounting	1
Number of operating segments, company provides operations management services	6
Number of non-operations management services	2
Number of reportable segments \| Segment		2

Segment & Geographical Information - Revenues and Cost of Revenues for Company's Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	$ 177,274	$ 171,200	$ 170,478	$ 167,036	$ 165,858	$ 163,503	$ 155,621	$ 143,510	$ 685,988	$ 628,492	$ 499,278
Cost of revenues (exclusive of depreciation and amortization)									447,956	402,917	332,535
Gross profit	61,490	59,433	58,452	58,657	59,742	60,305	55,143	50,385	238,032	225,575	166,743
Operating expenses									173,810	158,232	132,703
Foreign exchange gain, interest expense and other income, net									19,662	8,433	3,598
Income tax expense									22,151	24,211	5,193
Net income	$ 15,488	$ 16,050	$ 16,375	$ 13,820	$ 14,762	$ 15,162	$ 12,074	$ 9,567	61,733	51,565	32,445
Insurance [Member]
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net									206,327	199,878	151,308
Cost of revenues (exclusive of depreciation and amortization)									146,203	134,196	107,026
Gross profit									60,124	65,682	44,282
Healthcare [Member]
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net									68,656	55,209	42,848
Cost of revenues (exclusive of depreciation and amortization)									44,098	37,224	29,598
Gross profit									24,558	17,985	13,250
Travel, Transportation and Logistics [Member]
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net									69,366	62,264	47,492
Cost of revenues (exclusive of depreciation and amortization)									41,962	37,506	29,945
Gross profit									27,404	24,758	17,547
Finance and Accounting [Member]
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net									79,416	78,504	92,013
Cost of revenues (exclusive of depreciation and amortization)									48,302	46,846	56,770
Gross profit									31,114	31,658	35,243
Other Operations Management [Member]
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net									96,489	110,486	100,002
Cost of revenues (exclusive of depreciation and amortization)									61,050	68,307	63,154
Gross profit									35,439	42,179	36,848
Analytics
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net									165,734	122,151	65,615
Cost of revenues (exclusive of depreciation and amortization)									106,341	78,838	46,042
Gross profit									59,393	43,313	19,573
BPM Services [Member]
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net									520,254	506,341	433,663
Analytics Services [Member]
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net									$ 165,734	$ 122,151	$ 65,615

Segment & Geographical Information Segment & Geographical Information - Revenues Based on Geographical Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues, net
Revenues, net	$ 177,274	$ 171,200	$ 170,478	$ 167,036	$ 165,858	$ 163,503	$ 155,621	$ 143,510	$ 685,988	$ 628,492	$ 499,278
Property, Plant and Equipment, net
Property, plant and equipment, net	49,029				47,991				49,029	47,991
United States
Revenues, net
Revenues, net									554,945	496,418	368,870
Property, Plant and Equipment, net
Property, plant and equipment, net	10,809				10,680				10,809	10,680
United Kingdom
Revenues, net
Revenues, net									109,905	108,868	101,789
Rest of World
Revenues, net
Revenues, net									21,138	23,206	28,619
Property, Plant and Equipment, net
Property, plant and equipment, net	2,958				2,611				2,958	2,611
Non-US
Revenues, net
Revenues, net									131,043	132,074	$ 130,408
India
Property, Plant and Equipment, net
Property, plant and equipment, net	23,362				23,415				23,362	23,415
Philippines
Property, Plant and Equipment, net
Property, plant and equipment, net	$ 11,900				$ 11,285				$ 11,900	$ 11,285

Quarterly Financial Data - Summary of Quarterly Results (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenues, net	$ 177,274	$ 171,200	$ 170,478	$ 167,036	$ 165,858	$ 163,503	$ 155,621	$ 143,510	$ 685,988	$ 628,492	$ 499,278
Gross profit	61,490	59,433	58,452	58,657	59,742	60,305	55,143	50,385	238,032	225,575	166,743
Net income	$ 15,488	$ 16,050	$ 16,375	$ 13,820	$ 14,762	$ 15,162	$ 12,074	$ 9,567	$ 61,733	$ 51,565	$ 32,445
Earnings Per Share:
Basic (in dollars per share)	$ 0.46	$ 0.48	$ 0.49	$ 0.41	$ 0.44	$ 0.46	$ 0.36	$ 0.29	$ 1.84	$ 1.55	$ 0.99
Diluted (in dollars per share)	$ 0.45	$ 0.46	$ 0.47	$ 0.40	$ 0.43	$ 0.44	$ 0.35	$ 0.28	$ 1.79	$ 1.51	$ 0.96
Weighted-average number of shares used in computing earnings per share:
Basic (in shares)	33,638,170	33,624,401	33,621,444	33,380,028	33,231,716	33,307,312	33,417,079	33,236,259	33,566,367	33,298,104	32,804,606
Diluted (in shares)	34,714,308	34,675,485	34,510,400	34,351,657	34,272,731	34,180,635	34,207,973	34,051,971	34,563,319	34,178,340	33,636,593
Stock compensation expense	$ 5,027	$ 4,484	$ 4,450	$ 5,809	$ 3,768	$ 4,471	$ 3,553	$ 4,255	$ 19,770	$ 16,047	$ 11,011
Amortization of intangibles	$ 3,592	$ 2,848	$ 2,718	$ 2,715	$ 2,717	$ 2,642	$ 2,808	$ 2,059	$ 11,873	$ 10,226	$ 6,623

Earnings Per Share Earnings Per Share - Computation of Basic and Diluated Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerators:
Net income	$ 15,488	$ 16,050	$ 16,375	$ 13,820	$ 14,762	$ 15,162	$ 12,074	$ 9,567	$ 61,733	$ 51,565	$ 32,445
Denominators:
Basic weighted average common shares outstanding (in shares)	33,638,170	33,624,401	33,621,444	33,380,028	33,231,716	33,307,312	33,417,079	33,236,259	33,566,367	33,298,104	32,804,606
Dilutive effect of share based awards (in shares)									996,952	880,236	831,987
Diluted weighted average common shares outstanding (in shares)	34,714,308	34,675,485	34,510,400	34,351,657	34,272,731	34,180,635	34,207,973	34,051,971	34,563,319	34,178,340	33,636,593
Earnings per share:
Basic (in dollars per share)	$ 0.46	$ 0.48	$ 0.49	$ 0.41	$ 0.44	$ 0.46	$ 0.36	$ 0.29	$ 1.84	$ 1.55	$ 0.99
Diluted (in dollars per share)	$ 0.45	$ 0.46	$ 0.47	$ 0.40	$ 0.43	$ 0.44	$ 0.35	$ 0.28	$ 1.79	$ 1.51	$ 0.96
Weighted average common shares considered anti-dilutive in computing diluted earnings per share (in shares)									92,538	73,896	114,395

Other Income, net Other Income, net - Summary of Other Income, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Nonoperating Income (Expense) [Abstract]
Interest and dividend income	$ 1,673	$ 2,904	$ 3,709
Gain on sale of mutual fund investments	8,087	3,902	0
Change in fair value of earn-out consideration	4,060	0	0
Other, net	1,588	221	263
Other income, net	$ 15,408	$ 7,027	$ 3,972

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Owned Assets:
Owned assets, gross	$ 164,097	$ 143,517
Less: Accumulated depreciation and amortization	(115,568)	(96,079)
Owned Assets, net	48,529	47,438
Assets under capital leases:
Capital leased assets, gross	1,797	1,819
Less: Accumulated depreciation and amortization	(1,297)	(1,266)
Assets under capital leases, net	500	553
Property, Plant and Equipment, net	49,029	47,991
Network equipment, computers and software
Owned Assets:
Owned assets, gross	$ 109,998	95,245
Network equipment, computers and software \| Minimum
Owned Assets:
Estimated useful life (in years)	3 years
Network equipment, computers and software \| Maximum
Owned Assets:
Estimated useful life (in years)	5 years
Leasehold improvements
Owned Assets:
Owned assets, gross	$ 31,192	28,603
Assets under capital leases:
Capital leased assets, gross	$ 854	877
Leasehold improvements \| Minimum
Owned Assets:
Estimated useful life (in years)	3 years
Leasehold improvements \| Maximum
Owned Assets:
Estimated useful life (in years)	8 years
Office furniture and equipment
Owned Assets:
Owned assets, gross	$ 15,426	14,000
Assets under capital leases:
Capital leased assets, gross	$ 133	136
Office furniture and equipment \| Minimum
Owned Assets:
Estimated useful life (in years)	3 years
Office furniture and equipment \| Maximum
Owned Assets:
Estimated useful life (in years)	8 years
Motor vehicles
Owned Assets:
Owned assets, gross	$ 580	540
Assets under capital leases:
Capital leased assets, gross	$ 810	806
Motor vehicles \| Minimum
Owned Assets:
Estimated useful life (in years)	2 years
Motor vehicles \| Maximum
Owned Assets:
Estimated useful life (in years)	5 years
Buildings
Owned Assets:
Owned assets, gross	$ 1,171	1,202
Estimated useful life (in years)	30 years
Land
Owned Assets:
Owned assets, gross	$ 766	787
Capital work in progress
Owned Assets:
Owned assets, gross	$ 4,964	$ 3,140

Property, Plant and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 22,707,000	$ 21,239,000	$ 21,405,000
Capitalized computer software development costs	2,242,000	0
Capitalized software development amortization expense	$ 336,000	$ 0

Business Combinations, Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands					3 Months Ended								12 Months Ended
	Oct. 22, 2016	Sep. 01, 2016	Jul. 01, 2016	Jun. 19, 2015	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Vesting period (in years)				4 years
Acquisition related costs					$ 633								$ 633
Revenue of acquirees since acquisition													6,855
Amortization expense					$ 3,592	$ 2,848	$ 2,718	$ 2,715	$ 2,717	$ 2,642	$ 2,808	$ 2,059	$ 11,873	$ 10,226	$ 6,623
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)													5 years 9 months 18 days
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)													4 years 10 months 24 days
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)													2 years 6 months
Leasehold benefits
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)													2 years 4 months 24 days
Trade names and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)													5 years 3 months 18 days
Liss Systems Limited
Acquired Finite-Lived Intangible Assets [Line Items]
Cash consideration transferred			$ 5,111
Liss Systems Limited \| Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (in years)													5 years
Liss Systems Limited \| Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (in years)													10 years
Liss Systems Limited \| Trade names and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (in years)													3 years
IQR Consulting Inc.
Acquired Finite-Lived Intangible Assets [Line Items]
Cash consideration transferred		$ 5,092
IQR Consulting Inc. \| Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (in years)		8 years
Datasource Consulting, LLC
Acquired Finite-Lived Intangible Assets [Line Items]
Cash consideration transferred	$ 20,318
Datasource Consulting, LLC \| Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	6 years
Datasource Consulting, LLC \| Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	5 years
Datasource Consulting, LLC \| Trade names and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	3 years
Restricted Stock \| Liss Systems Limited
Acquired Finite-Lived Intangible Assets [Line Items]
Restricted common stock issued (in shares)			33,459
Fair value of restricted common stock issued			$ 1,754
Vesting period (in years)			4 years
Restricted Stock \| IQR Consulting Inc.
Acquired Finite-Lived Intangible Assets [Line Items]
Restricted common stock issued (in shares)		21,987
Fair value of restricted common stock issued		$ 1,125
Vesting period (in years)		4 years
Restricted Stock \| Datasource Consulting, LLC
Acquired Finite-Lived Intangible Assets [Line Items]
Restricted common stock issued (in shares)	93,604
Fair value of restricted common stock issued	$ 4,483
Vesting period (in years)	4 years

Business Combinations, Goodwill and Intangible Assets - Summary of Purchase Price Allocation for Acquisitions (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Oct. 22, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 186,770		$ 171,535	$ 139,599
Liss Systems Limited
Business Acquisition [Line Items]
Tangible assets	517
Tangible liabilities	(993)
Deferred tax liability	(643)
Goodwill	2,510
Total purchase price	5,111
Liss Systems Limited \| Customer relationships
Business Acquisition [Line Items]
Identifiable intangible assets	1,918
Liss Systems Limited \| Developed technology
Business Acquisition [Line Items]
Identifiable intangible assets	1,571
Liss Systems Limited \| Trade names and trademarks
Business Acquisition [Line Items]
Identifiable intangible assets	231
IQR Consulting Inc.
Business Acquisition [Line Items]
Tangible assets	1,449
Tangible liabilities	(420)
Deferred tax liability	(836)
Goodwill	2,599
Total purchase price	5,092
IQR Consulting Inc. \| Customer relationships
Business Acquisition [Line Items]
Identifiable intangible assets	$ 2,300
Datasource Consulting, LLC
Business Acquisition [Line Items]
Tangible assets		$ 3,582
Tangible liabilities		(1,503)
Goodwill		10,999
Total purchase price		20,318
Datasource Consulting, LLC \| Customer relationships
Business Acquisition [Line Items]
Identifiable intangible assets		6,340
Datasource Consulting, LLC \| Developed technology
Business Acquisition [Line Items]
Identifiable intangible assets		520
Datasource Consulting, LLC \| Trade names and trademarks
Business Acquisition [Line Items]
Identifiable intangible assets		$ 380

Business Combinations, Goodwill and Intangible Assets - Summary of Company's Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Beginning Balance	$ 171,535	$ 139,599
Acquisitions	16,108	33,155
Currency translation adjustments	(873)	(1,219)
Ending Balance	186,770	171,535
Insurance [Member]
Goodwill [Roll Forward]
Beginning Balance	35,824	35,824
Acquisitions	2,510	0
Currency translation adjustments	(224)	0
Ending Balance	38,110	35,824
Healthcare [Member]
Goodwill [Roll Forward]
Beginning Balance	19,276	19,276
Acquisitions	0	0
Currency translation adjustments	0	0
Ending Balance	19,276	19,276
Travel, Transportation and Logistics [Member]
Goodwill [Roll Forward]
Beginning Balance	13,278	13,833
Acquisitions	0	0
Currency translation adjustments	(295)	(555)
Ending Balance	12,983	13,278
Finance and Accounting [Member]
Goodwill [Roll Forward]
Beginning Balance	47,891	48,555
Acquisitions	0	0
Currency translation adjustments	(354)	(664)
Ending Balance	47,537	47,891
Other Operations Management [Member]
Goodwill [Roll Forward]
Beginning Balance	5,326	5,326
Acquisitions	0	0
Currency translation adjustments	0	0
Ending Balance	5,326	5,326
Analytics
Goodwill [Roll Forward]
Beginning Balance	49,940	16,785
Acquisitions	13,598	33,155
Currency translation adjustments	0	0
Ending Balance	$ 63,538	$ 49,940

Business Combinations, Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 99,487	$ 86,654
Accumulated Amortization	(46,617)	(34,821)
Finite-lived intangible assets, net	52,870	51,833
Intangible assets, gross	100,387	87,554
Intangible assets, net	53,770	52,733
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	75,181	64,816
Accumulated Amortization	(32,968)	(24,215)
Finite-lived intangible assets, net	42,213	40,601
Leasehold benefits
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,715	2,789
Accumulated Amortization	(2,247)	(2,109)
Finite-lived intangible assets, net	468	680
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	14,186	12,234
Accumulated Amortization	(6,468)	(4,363)
Finite-lived intangible assets, net	7,718	7,871
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,045	2,045
Accumulated Amortization	(1,612)	(1,451)
Finite-lived intangible assets, net	433	594
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	5,360	4,770
Accumulated Amortization	(3,322)	(2,683)
Finite-lived intangible assets, net	2,038	2,087
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, trade names and trademarks	$ 900	$ 900

Business Combinations, Goodwill and Intangible Assets - Estimated Amortization of Intangible Assets (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Business Combinations [Abstract]
2017	$ 13,910
2018	12,156
2019	11,257
2020	4,111
2021 and thereafter	11,436
Amortization expense, estimated for five years	$ 52,870

Accrued expenses and other current liabilities Accrued expenses and other current liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accrued expenses	$ 30,690	$ 26,238
Derivative instruments	1,430	1,226
Client liability account	4,005	2,217
Other current liabilities	7,139	4,569
Accrued expenses and other current liabilities	$ 43,264	$ 34,250

Non-current liabilities Non-current liabilities - Summary of Non-Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Liabilities, Noncurrent [Abstract]
Derivative instruments	$ 828	$ 1,132
Unrecognized tax benefits	3,640	3,066
Deferred rent	7,237	6,515
Retirement benefits	1,977	1,441
Other non-current liabilities	1,137	5,501
Non-current liabilities	$ 14,819	$ 17,655

Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Liabilities
Fair value of earn-out consideration		$ 0
Recurring
Assets
Money market and mutual funds	$ 118,185		$ 118,478
Derivative financial instruments	6,319		4,184
Total	124,504		122,662
Liabilities
Derivative financial instruments	2,258		2,358
Fair value of earn-out consideration			4,060
Total	2,258		6,418
Recurring \| Level 1
Assets
Money market and mutual funds	118,185		118,478
Total	118,185		118,478
Liabilities
Fair value of earn-out consideration			0
Recurring \| Level 2
Assets
Money market and mutual funds	0
Derivative financial instruments	6,319		4,184
Total	6,319		4,184
Liabilities
Derivative financial instruments	2,258		2,358
Fair value of earn-out consideration			0
Total	2,258		2,358
Recurring \| Level 3
Assets
Money market and mutual funds	0
Liabilities
Derivative financial instruments	$ 0		0
Fair value of earn-out consideration			4,060
Total			4,060
RPM Direct LLC and RPM Data Solutions LLC \| Recurring
Liabilities
Fair value of earn-out consideration			$ 4,060

Derivatives and Hedge Accounting - Additional Information (Detail) £ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 GBP (£)	Dec. 31, 2015 GBP (£)
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative losses which could be reclassified into earnings within the next 12 months	$ 1,781
Maximum outstanding term of cash flow hedges (in months)	45 months
Gain/(losses) that reclassified from AOCI into earning for discontinued hedging transactions	$ 0	$ 0
Derivatives Designated as Hedging Instruments \| Derivatives in Cash Flow Hedging Relationships \| Foreign Currency Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contracts outstanding	218,545	230,894
Derivatives not Designated as Hedging Instruments \| Foreign Currency Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contracts outstanding	$ 71,318	$ 61,641	£ 11,153	£ 13,256

Derivatives and Hedge Accounting - Summary of Fair Value of Foreign Currency Exchange Contracts (Detail) - Foreign Currency Exchange Contracts - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Derivatives Designated as Hedging Instruments \| Other current assets
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, asset	$ 3,211	$ 2,664
Derivatives Designated as Hedging Instruments \| Other assets
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, asset	2,994	1,175
Derivatives Designated as Hedging Instruments \| Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, liability	1,430	1,226
Derivatives Designated as Hedging Instruments \| Other non current liabilities
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, liability	828	1,132
Derivatives not Designated as Hedging Instruments \| Other current assets
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, asset	$ 113	$ 345

Derivatives and Hedge Accounting - Summary of Effect of Foreign Currency Exchange Contracts on Consolidated Statements of Income (Detail) - Foreign Currency Exchange Contracts - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivatives Designated as Hedging Instruments \| Derivatives in Cash Flow Hedging Relationships
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in AOCI on Derivative (Effective Portion)	$ 3,895	$ (1,111)
Foreign exchange gain \| Derivatives Designated as Hedging Instruments \| Derivatives in Cash Flow Hedging Relationships
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/ (Loss) Reclassified from AOCI into Income (Effective Portion)	1,434	(1,117)
Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0
Foreign exchange gain \| Derivatives not Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivatives	$ 4,790	$ 862

Borrowings - Additional Information (Detail)		12 Months Ended
Borrowings - Additional Information (Detail)	Oct. 24, 2014 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Credit Facilities [Line Items]
Other short-term borrowings		$ 10,000,000	$ 10,000,000
Revolving Credit Facility
Credit Facilities [Line Items]
Revolving credit facility	$ 50,000,000	$ 45,000,000
Debt instrument, term (in years)	5 years
Option to increase additional credit facility	$ 50,000,000
Credit facility expiration date		Oct. 24, 2019
Line of credit interest rate during period (as a percent)		2.21%
Other short-term borrowings		$ 10,000,000
Unamortized debt issuance costs		$ 272,000	$ 368,000
Interest coverage ratio, minimum		3.5
Leverage ratio, minimum		2.5
Revolving Credit Facility \| Minimum
Credit Facilities [Line Items]
Commitment fee percentage range on unused credit facility (as a percent)		0.20%
Revolving Credit Facility \| Maximum
Credit Facilities [Line Items]
Commitment fee percentage range on unused credit facility (as a percent)		0.30%
Revolving Credit Facility \| Prime Rate \| Minimum
Credit Facilities [Line Items]
Basis spread on variable rate (as a percent)		0.25%
Revolving Credit Facility \| Prime Rate \| Maximum
Credit Facilities [Line Items]
Basis spread on variable rate (as a percent)		0.75%
Revolving Credit Facility \| London Interbank Offered Rate (LIBOR) \| Minimum
Credit Facilities [Line Items]
Basis spread on variable rate (as a percent)		1.25%
Revolving Credit Facility \| London Interbank Offered Rate (LIBOR) \| Maximum
Credit Facilities [Line Items]
Basis spread on variable rate (as a percent)		1.75%

Capital Structure - Additional Information (Detail)	12 Months Ended
Capital Structure - Additional Information (Detail)	Dec. 31, 2016 USD ($) ClassOfCommonStock $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 30, 2014 USD ($)
Equity, Class of Treasury Stock [Line Items]
Number of classes of common stock outstanding \| ClassOfCommonStock	1
Acquisition of restricted stock from employees in connection with withholding tax payments (in shares) \| shares	17,676	15,078
Withholding tax payments related to the vesting of restricted stock for total consideration	$ 807,000	$ 484,000
Weighted average purchase price per share prior to the vesting date (in dollars per share) \| $ / shares	$ 45.65	$ 32.10
2014 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock authorized by board of directors up to			$ 20,000,000
Stock repurchase program, period start (year)	2015
Stock repurchase program, period end (year)	2017
Common stock shares purchased under the repurchase program (in shares) \| shares	364,056	377,015
Common stock aggregate purchase price including commissions	$ 17,396,000	$ 13,711,000
Common stock average purchase price per share (in dollars per share) \| $ / shares	$ 47.78	$ 36.37

Employee Benefit Plans - Summary of Change in Projected Benefit Obligation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Change in projected benefit obligation:
Benefit obligation at the beginning of the year	$ 7,909	$ 7,563
Service cost	1,601	1,638	$ 1,523
Interest cost	599	550	559
Benefits paid	(837)	(851)
Actuarial (gain)/loss	677	(609)
Acquisition	47	0
Effect of exchange rate changes	(285)	(382)
Projected benefit obligation at the end of the year	9,711	7,909	$ 7,563
Unfunded amount–non-current	1,977	1,441
Unfunded amount–current	2,094	1,545
Total accrued liability	4,071	2,986
Accumulated benefit obligation	$ 6,533	$ 5,537

Employee Benefit Plans - Net Gratuity Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 1,601	$ 1,638	$ 1,523
Interest cost	599	550	559
Expected return on plan assets	(416)	(385)	(172)
Actuarial loss	90	211	149
Net gratuity cost	$ 1,874	$ 2,014	$ 2,059

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Accumulated other comprehensive loss, expected to be recognized over the next fiscal year	$ 268
Percentage of discretionary contributions towards 401(k) Plan, Maximum (as a percent)	3.00%	3.00%	3.00%
Company's contribution to the 401(k) Plan	$ 2,383	$ 1,907	$ 1,503
Contribution to various defined contribution plans	$ 6,306	$ 5,753	$ 5,802

Employee Benefit Plans - Summary of Components Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax [Abstract]
Net actuarial loss	$ 489	$ 77
Net prior service cost	9	9
Accumulated other comprehensive loss, net of tax	$ 498	$ 86

Employee Benefit Plans - Summary of Weighted Average Actuarial Assumptions (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate (as a percent)	6.80%	7.80%	8.00%
Rate of increase in compensation levels (as a percent)	9.20%	8.40%	8.20%
Expected long term rate of return on plan assets per annum (as a percent)	9.00%	9.00%	9.00%

Employee Benefit Plans - Summary of Expected Benefit Payments (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2017	$ 2,782
2018	2,407
2020	2,146
2021	1,960
2021	1,785
2022 to 2026	$ 5,238

Employee Benefit Plans - Change in Plan Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at the beginning of the year	$ 4,923	$ 4,752
Actual return	450	355
Employer contribution	1,242	903
Benefits paid	(837)	(851)
Effect of exchange rate changes	(138)	(236)
Plan assets at the ending of the year	$ 5,640	$ 4,923

Leases - Future Minimum Lease Payments under Capital Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Leases [Abstract]
2017	$ 289
2018	186
2019	117
2020	47
Total minimum lease payments	639
Less: amount representing interest	107
Present value of minimum lease payments	532
Less: current portion	232	$ 384
Long term capital lease obligation	$ 300	$ 278

Leases - Future Minimum Lease Payments under Non-Cancelable Operating Lease Agreements Expiring After December 31, 2016 (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Leases [Abstract]
2017	$ 9,586
2018	8,119
2019	5,895
2020	4,085
2021	1,950
2022 and thereafter	1,398
Total operating lease payments	$ 31,033

Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Leases [Abstract]
Rent expense under both cancelable and non-cancelable operating leases	$ 21,382	$ 19,943	$ 18,884
Deferred rent	$ 7,915	$ 7,066

Income Taxes - Summary of Components of Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Domestic	$ 12,652	$ 25,045	$ (4,785)
Foreign	71,232	50,731	42,423
Income before income tax expense	$ 83,884	$ 75,776	$ 37,638

Income Taxes - Summary of Income Tax Provision/(Benefit) Relating to Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current provision/(benefit):
Domestic	$ 7,107	$ 9,951	$ (1,069)
Foreign	18,428	12,022	6,186
Total	25,535	21,973	5,117
Deferred provision/(benefit):
Domestic	(2,506)	3,041	535
Foreign	(878)	(803)	(459)
Total	(3,384)	2,238	76
Income tax expense	$ 22,151	$ 24,211	$ 5,193

Income Taxes - Summary of Effective Income Tax Rate Differs from Amount Computed by Applying U.S. Federal Statutory Income Tax Rate to Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Expected tax expense	$ 29,361	$ 26,521	$ 12,797
Change in valuation allowance	22	19	64
Impact of tax holiday	(4,027)	(2,991)	(3,208)
Foreign tax rate differential	(2,716)	(2,797)	(3,327)
Deferred tax (benefit)/provision	(878)	(803)	(459)
Unrecognized tax benefits and interest	495	324	(1,846)
State taxes, net of Federal taxes	202	1,327	593
Non-deductible expenses	144	26	15
Prior year tax expense/(benefit)		2,450
Other	(452)	135	564
Income tax expense	$ 22,151	$ 24,211	$ 5,193

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Effective tax rates (as a percent)	26.40%	32.00%
Expiration period of tax holiday	6 years
Effective tax rate in Philippines post tax exemption (as a percent)	5.00%
Effect of diluted earnings per share, tax holiday (in dollars per share)	$ 0.12	$ 0.09	$ 0.10
Operating loss carryforward valuation allowance	$ 351,000	$ 512,000
Valuation allowance related to tax credit carry forward	103,000	83,000
Deferred income taxes provided for Company's share of undistributed net earnings of foreign operations	0	0
Undistributed net earnings of foreign operations	315,486,000	261,804,000
Unrecognized tax benefits	3,087,000	2,797,000
Recognized interest and penalties	315,000	205,000
Accrued interest on unrecognized tax benefits	$ 1,553,000	1,269,000
First Five Years
Income Taxes [Line Items]
Tax exemption on profit (as a percent)	100.00%
Five to Ten Years
Income Taxes [Line Items]
Tax exemption on profit (as a percent)	50.00%
Expiration 2032
Income Taxes [Line Items]
Operating loss carryforwards	$ 4,052,000	$ 9,063,000
Operating loss carry forwards expiration date (year)	2032

Income Taxes - Summary of Components of Deferred Tax Balances (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Tax credit carry forward	$ 4,806	$ 5,164
Depreciation and amortization	3,765	3,777
Share-based compensation	10,385	8,099
Accrued employee costs and other expenses	5,130	3,079
Net operating loss carry forwards	1,856	3,746
Unrealized exchange loss	2,099	1,136
Deferred rent	1,307	1,292
Others	484	62
Deferred tax assets	29,832	26,355
Valuation allowance	(454)	(595)
Deferred tax assets	29,378	25,760
Deferred tax liabilities:
Unrealized exchange gain	1,414	848
Intangible assets	13,165	11,163
Deferred tax liabilities:	14,579	12,011
Net deferred tax assets	$ 14,799	$ 13,749

Income Taxes - Summary of Activity Related to Gross Unrecognized Tax Benefits (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance as of January 1, 2016	$ 2,797
Increases related to prior year tax positions	156
Decreases related to prior year tax positions	0
Increases related to current year tax positions	178
Decreases related to current year tax positions	0
Effect of exchange rate changes	(44)
Balance as of December 31, 2016	$ 3,087

Stock Based Compensation - Additional Information (Detail) - shares	Jun. 19, 2015	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiring period of equity options to employees (in years)	10 years
Vesting period (in years)	4 years
2015 Stock Options Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in number of shares available for grant (in shares)	1,700,000
Number of shares available for grant (in shares)		1,894,867

Stock Based Compensation - Costs Related to Company's Stock-Based Compensation Plan (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses	$ 5,027	$ 4,484	$ 4,450	$ 5,809	$ 3,768	$ 4,471	$ 3,553	$ 4,255	$ 19,770	$ 16,047	$ 11,011
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses									3,664	2,895	2,290
General and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses									8,372	6,077	4,350
Selling and marketing expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses									$ 7,734	$ 7,075	$ 4,371

Stock Based Compensation - Stock Based Compensation Stock Option Activity (Detail) - Employee Stock Option - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, outstanding, beginning balance (in shares)	1,210,141
Number of options, granted (in shares)	0
Number of options, exercised (in shares)	(398,239)
Number of options, forfeited (in shares)	0
Number of options, outstanding, ending balance (in shares)	811,902	1,210,141
Number of options, vested and exercisable at December 31, 2016 (in shares)	811,902
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted-average exercise price, outstanding, beginning balance (in dollars per share)	$ 16.31
Weighted-average exercise price, granted (in dollars per share)	0.00
Weighted-average exercise price, exercised (in dollars per share)	16.32
Weighted-average exercise price, forfeited (in dollars per share)	0.00
Weighted-average exercise price, outstanding, ending balance (in dollars per share)	16.31	$ 16.31
Weighted average exercise price, vested and exercisable at December 31, 2016 (in dollars per share)	$ 16.31
Aggregate intrinsic value, outstanding, ending balance	$ 27,718	$ 34,638
Weighted-average remaining contractual life, outstanding, ending balance (in years)	2 years 11 months 16 days	3 years 6 months
Aggregate intrinsic value, vested and exercisable at December 31, 2016	$ 27,718
Weighted-average remaining contractual life, vested and exercisable at December 31, 2016 (in years)	2 years 11 months 16 days

Stock Based Compensation - Stock Options Additional Information (Details) - Employee Stock Option - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Unrecognized compensation cost for unvested stock options	$ 0
Weighted-average fair value of options granted (in dollars per share)			$ 9.77
Total grant date fair value of option vested in period	706,000	$ 1,228,000	$ 2,112,000
Intrinsic value of options exercised	$ 12,911,000	$ 4,413,000	$ 5,757,000

Stock Based Compensation - Company's Stock Options Outstanding and Stock Options Vested and Exercisable (Detail)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding (in shares) \| shares	811,902
Options Outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 16.31
Options Vested and Exercisable (in shares) \| shares	811,902
Options Vested and Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 16.31
$8.00 to $15.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range limit (in dollars per share)	8.00
Range of Exercise Prices, upper range limit (in dollars per share)	$ 15.00
Options Outstanding (in shares) \| shares	362,134
Options Outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 9.31
Options Vested and Exercisable (in shares) \| shares	362,134
Options Vested and Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 9.31
$15.01 to $21.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range limit (in dollars per share)	15.01
Range of Exercise Prices, upper range limit (in dollars per share)	$ 21.00
Options Outstanding (in shares) \| shares	194,515
Options Outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 18.84
Options Vested and Exercisable (in shares) \| shares	194,515
Options Vested and Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 18.84
$21.01 to $28.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range limit (in dollars per share)	21.01
Range of Exercise Prices, upper range limit (in dollars per share)	$ 28.00
Options Outstanding (in shares) \| shares	255,253
Options Outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 24.30
Options Vested and Exercisable (in shares) \| shares	255,253
Options Vested and Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 24.30

Stock Based Compensation - Restricted Stock Activity Under Company's Stock Plans (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number, outstanding, beginning balance (in shares)	134,934
Number, granted (in shares)	127,063
Number, vested (in shares)	(15,057)
Number, forfeited (in shares)	0
Number, outstanding, ending balance (in shares)	246,940	134,934
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-average fair value, outstanding, beginning balance (in dollars per share)	$ 35.28
Weighted-average fair value, granted (in dollars per share)	49.08
Weighted-average fair value, vested (in dollars per share)	34.61
Weighted-average fair value, forfeited (in dollars per share)	0.00
Weighted-average fair value, outstanding, ending balance (in dollars per share)	$ 42.42	$ 35.28
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number, outstanding, beginning balance (in shares)	1,228,287
Number, granted (in shares)	468,370
Number, vested (in shares)	(358,712)
Number, forfeited (in shares)	(81,657)
Number, outstanding, ending balance (in shares)	1,256,288	1,228,287
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-average fair value, outstanding, beginning balance (in dollars per share)	$ 30.06
Weighted-average fair value, granted (in dollars per share)	48.94
Weighted-average fair value, vested (in dollars per share)	28.55
Weighted-average fair value, forfeited (in dollars per share)	32.38
Weighted-average fair value, outstanding, ending balance (in dollars per share)	$ 37.38	$ 30.06
Restricted stock units vested for which underlying common stock to be issued (in shares)	19,874	21,364
Restricted stock units vested (in shares)	135,054	149,364
Restricted stock units forfeited (in shares)		5,296

Stock Based Compensation - Restricted Stock and RSU Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 43,016
Cost not yet recognized, period for recognition (in years)	2 years 8 months 12 days
Weighted-average fair value of restricted stock and RSUs granted (in dollars per share)	$ 48.97	$ 35.18	$ 26.47
Number of restricted stock units, vested	$ 10,761	$ 12,620	$ 11,393
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of restricted stock and RSUs granted (in dollars per share)	$ 49.08
Number of restricted stock units, granted (in shares)	127,063
Liss Systems Limited \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units, granted (in shares)	33,459
Datasource Consulting, LLC \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units, granted (in shares)	93,604
IQR Consulting Inc. \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units, granted (in shares)	21,987
RPM Direct LLC and RPM Data Solutions LLC \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units, granted (in shares)		122,131

Stock Based Compensation - Performance Based Stock Awards Additional Information (Details) - USD ($) $ in Thousands		2 Months Ended	12 Months Ended
	Jun. 19, 2015	Feb. 28, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
Revenue Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target shares an employee can earn (as a percent)			200.00%
Number, granted (in shares)			59,861
Revenue Based PRSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target shares an employee can earn (as a percent)			200.00%
Market Condition Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number, granted (in shares)			59,859
Performance Based Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost			$ 8,603
Cost not yet recognized, period for recognition (in years)			1 year 7 months 2 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number, granted (in shares)			468,370
Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based percentage (as a percent)			100.00%
Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan) \| Revenue Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based percentage (as a percent)			50.00%
Vesting period (in years)			3 years
Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan) \| Revenue Based PRSUs \| Year One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights (as a percent)					33.33%
Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan) \| Revenue Based PRSUs \| Year Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights (as a percent)				33.33%
Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan) \| Market Condition Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based percentage (as a percent)			50.00%
Vesting period (in years)			3 years
Amendment And Restatement Of The 2006 Omnibus Award Plan (2015 Plan) \| Market Condition Based PRSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target shares an employee can earn (as a percent)			200.00%
Subsequent Event \| Performance Based Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number, granted (in shares)		495,000

Stock Based Compensation - Performance Restricted Stock Activity (Details)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Revenue Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number, outstanding, beginning balance (in shares) \| shares	107,213
Number, granted (in shares) \| shares	59,861
Number, additionally issued due to achievement of higher-than-target performance (in shares) \| shares	307
Number, vested (in shares) \| shares	(44,407)
Number, forfeited (in shares) \| shares	(7,800)
Number, outstanding, ending balance (in shares) \| shares	115,174
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-average fair value, outstanding, beginning balance (in dollars per share) \| $ / shares	$ 30.88
Weighted-average fair value, granted (in dollars per share) \| $ / shares	48.57
Weighted-average fair value, additionally issued due to achievement of higher-than-target performance (in shares) \| $ / shares	25.63
Weighted-average fair value, vested (in dollars per share) \| $ / shares	25.63
Weighted-average fair value, forfeited (in dollars per share) \| $ / shares	36.51
Weighted-average fair value, outstanding, ending balance (in dollars per share) \| $ / shares	$ 41.70
Market Condition Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number, outstanding, beginning balance (in shares) \| shares	207,212
Number, granted (in shares) \| shares	59,859
Number, additionally issued due to achievement of higher-than-target performance (in shares) \| shares	44,100
Number, vested (in shares) \| shares	(88,200)
Number, forfeited (in shares) \| shares	(7,800)
Number, outstanding, ending balance (in shares) \| shares	215,171
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-average fair value, outstanding, beginning balance (in dollars per share) \| $ / shares	$ 38.80
Weighted-average fair value, granted (in dollars per share) \| $ / shares	67.94
Weighted-average fair value, additionally issued due to achievement of higher-than-target performance (in shares) \| $ / shares	33.60
Weighted-average fair value, vested (in dollars per share) \| $ / shares	33.60
Weighted-average fair value, forfeited (in dollars per share) \| $ / shares	54.16
Weighted-average fair value, outstanding, ending balance (in dollars per share) \| $ / shares	$ 47.42

Stock Based Compensation Share-based Compensation - Summary of Weighted Average Valuation Assumptions for Market Condition Performance Restricted Stock Units (Details) - Market Condition Based PRSUs	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%	0.00%	0.00%
Expected life (in years)	2 years 10 months 6 days	2 years 10 months 2 days	2 years 10 months 17 days
Risk free interest rate (as a percent)	0.88%	0.98%	0.65%
Volatility (as a percent)	28.00%	30.30%	30.40%

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Purchase commitments, net of advances	$ 15,400
Export-oriented units established (as a percent)	100.00%
Transfer pricing issues starting period (year)	2003
Transfer pricing issues ending period (year)	2014
Permanent establishment issues starting period (year)	2003
Permanent establishment issues ending period (year)	2007
Aggregate disputed amount amount related to transfer pricing and permanent establishment	$ 17,963	$ 21,360
Total bank guarantees and deposits in respect of contingencies	8,640	14,668
Amounts paid as deposits in respect of contingencies	6,690	12,665
Bank guarantee issued	$ 1,950	$ 2,003