ExlService (EXLS) 10-Q 2 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 28, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	ExlService Holdings, Inc.
Entity Central Index Key	1,297,989
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Trading Symbol	EXLS
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		33,675,134

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 91,700	$ 213,155
Short-term investments	126,472	13,491
Restricted cash	2,691	3,846
Accounts receivable, net	119,811	113,067
Prepaid expenses	9,596	7,855
Advance income tax, net	7,687	6,242
Other current assets	25,541	21,168
Total current assets	383,498	378,824
Property, plant and equipment, net	59,220	49,029
Restricted cash	3,657	3,393
Deferred taxes, net	16,392	14,799
Intangible assets, net	50,356	53,770
Goodwill	187,952	186,770
Other assets	25,618	19,943
Total assets	726,693	706,528
Current liabilities:
Accounts payable	5,286	3,288
Short-term borrowings	10,000	10,000
Deferred revenue	17,968	16,615
Accrued employee cost	29,830	50,832
Accrued expenses and other current liabilities	47,670	43,264
Current portion of capital lease obligations	216	232
Total current liabilities	110,970	124,231
Long term borrowings	35,000	35,000
Capital lease obligations, less current portion	285	300
Non-current liabilities	17,729	14,819
Total liabilities	163,984	174,350
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, 36,100,622 shares issued and 33,772,166 shares outstanding as of March 31, 2017 and 35,699,819 shares issued and 33,628,109 shares outstanding as of December 31, 2016	36	36
Additional paid-in capital	296,792	284,646
Retained earnings	394,964	382,722
Accumulated other comprehensive loss	(57,013)	(75,057)
Total including shares held in treasury	634,779	592,347
Less: 2,328,456 shares as of March 31, 2017 and 2,071,710 shares as of December 31, 2016, held in treasury, at cost	(72,275)	(60,362)
ExlService Holdings, Inc. stockholders' equity	562,504	531,985
Non-controlling interest	205	193
Total equity	562,709	532,178
Total liabilities and equity	$ 726,693	$ 706,528

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
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)	36,100,622	35,699,819
Common stock, shares outstanding (in shares)	33,772,166	33,628,109
Treasury stock (in shares)	2,328,456	2,071,710

Unaudited Consolidated Statemen

Unaudited Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenues, net	$ 183,033	$ 167,036
Cost of revenues (exclusive of depreciation and amortization)	120,119	108,379
Gross profit	62,914	58,657
Operating expenses:
General and administrative expenses	24,224	20,618
Selling and marketing expenses	13,362	13,454
Depreciation and amortization	9,426	8,133
Total operating expenses	47,012	42,205
Income from operations	15,902	16,452
Foreign exchange gain, net	1,568	469
Interest expense	(432)	(385)
Other income, net	3,310	3,179
Income before income tax expense	20,348	19,715
Income tax expense	3,560	5,895
Net income	$ 16,788	$ 13,820
Earnings per share:
Basic (in dollars per share)	$ 0.50	$ 0.41
Diluted (in dollars per share)	$ 0.48	$ 0.40
Weighted-average number of shares used in computing earnings per share:
Basic weighted average common shares outstanding (in shares)	33,845,560	33,380,028
Diluted weighted average common shares outstanding (in shares)	35,108,882	34,351,657

Unaudited Consolidated Stateme5

Unaudited Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income		$ 16,788	$ 13,820
Other comprehensive income:
Unrealized gain on effective cash flow hedges, net of taxes $1,951 and $403, respectively		6,772	2,034
Foreign currency translation adjustment		11,643	1,033
Retirement benefits, net of taxes nil and $5, respectively		0	182
Reclassification adjustments
Realized (gain) on cash flow hedges, net of taxes ($191) and ($25), respectively(1)	[1]	(433)	(32)
Retirement benefits, net of taxes $7 and $1, respectively(2)	[2]	62	21
Total other comprehensive income		18,044	3,238
Total comprehensive income		$ 34,832	$ 17,058
[1]	These are reclassified to net income and are included in the foreign exchange gain in the unaudited consolidated statements of income. See Note 13 to the unaudited consolidated financial statements.
[2]	These are reclassified to net income and are included in the computation of net periodic pension costs in the unaudited consolidated statements of income. See Note 16 to the unaudited consolidated financial statements

Unaudited Consolidated Stateme6

Unaudited Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Unrealized (loss)/gain on effective cash flow hedges, taxes	$ 1,951	$ 403
Retirement benefits, taxes	0	5
Realized loss/(gain) on cash flow hedges, taxes	(191)	(25)
Retirement benefits, taxes	$ 7	$ 1

Unaudited Consolidated Stateme7

Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 16,788	$ 13,820
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	9,426	8,133
Stock-based compensation expense	5,956	5,809
Unrealized gain on short term investments	0	(1,525)
Change in fair value of earn-out consideration	0	(250)
Unrealized foreign exchange loss/(gain)	2,225	(1,061)
Deferred income taxes	(4,256)	3,646
Others, net	(7)	(12)
Change in operating assets and liabilities:
Restricted cash	1,050	(919)
Accounts receivable	(6,340)	(14,490)
Prepaid expenses and other current assets	(1,285)	(3,641)
Accounts payable	2,185	(2,584)
Deferred revenue	1,480	2,334
Accrued employee costs	(21,053)	(19,567)
Accrued expenses and other liabilities	806	4,147
Advance income tax, net	(1,471)	(4,429)
Other assets	1,569	148
Net cash provided by/(used for) operating activities	7,073	(10,441)
Cash flows from investing activities:
Purchase of property, plant and equipment	(10,114)	(8,457)
Purchase of short-term investments	(129,837)	(101,327)
Proceeds from redemption of short-term investments	22,879	20,004
Net cash used for investing activities	(117,072)	(89,780)
Cash flows from financing activities:
Principal payments on capital lease obligations	(43)	(123)
Repayments of borrowings	0	(5,000)
Acquisition of treasury stock	(11,913)	(6,855)
Proceeds from exercise of stock options	191	2,010
Net cash used for financing activities	(11,765)	(9,968)
Effect of exchange rate changes on cash and cash equivalents	309	640
Net decrease in cash and cash equivalents	(121,455)	(109,549)
Cash and cash equivalents, beginning of period	213,155	205,323
Cash and cash equivalents, end of period	$ 91,700	$ 95,774

Organization

Organization	3 Months Ended
	Mar. 31, 2017
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 the Business Process Management ("BPM") industry providing operations management services and analytics services that help businesses enhance growth and profitability. Using its proprietary platforms, methodologies and tools, the Company looks deeper to help its clients 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 Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies (a) Basis of Preparation and Principles of Consolidation The unaudited interim consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“US GAAP”) for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by US GAAP for annual financial statements and therefore should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016. The unaudited interim consolidated financial statements reflect all adjustments (of a normal and recurring nature) that management considers necessary for a fair presentation of such statements for the interim periods presented. The unaudited consolidated statements of income for the interim periods presented are not necessarily indicative of the results for the full year or for any subsequent period. The accompanying unaudited consolidated financial statements include 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 and it represents the minority partner’s interest in the operations of ExlService Colombia S.A.S. 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 all the periods presented were insignificant and are included under general and administrative expenses in the unaudited consolidated statements of income. (b) Use of Estimates The preparation of the unaudited 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 unaudited consolidated financial statements and the unaudited consolidated statements of income 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. (c) Share-Based Compensation 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 adopted this ASU effective January 1, 2017. The following summarizes the effects of the adoption on the Company's unaudited consolidated financial statements: Income taxes - Upon adoption of this standard, all excess tax benefits and tax deficiencies are recognized as income tax expense or benefit in the income statement. The tax effects of exercised or vested awards are treated as discrete items in the reporting period in which they occur. The Company also recognizes excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. As a result, the Company recognized discrete adjustments to income tax expense for the three months ended March 31, 2017, in the amount of $2,057 , related to excess tax benefits. No adjustment is recorded for any windfall benefits previously recorded in APIC. Forfeitures - Prior to adoption, share-based compensation expense was recognized on a straight line basis, net of estimated forfeitures, such that expense was recognized only for share-based awards that are expected to vest. A forfeiture rate was estimated annually and revised, if necessary, in subsequent periods if actual forfeitures differed from initial estimates. Upon adoption, the Company will no longer apply a forfeiture rate and instead will account for forfeitures as they occur. The Company has applied the modified retrospective adoption approach as of January 1, 2017 and has recognized a cumulative-effect adjustment to reduce additional paid-in-capital of $5,999 and retained earnings of $4,546 (net of deferred tax effect of $1,453 ). Statements of Cash Flows - The Company historically accounted for excess tax benefits on the Statement of Cash Flows as a financing activity. Upon adoption of this standard, excess tax benefits are classified along with other income tax cash flows as an operating activity. The Company has elected to adopt this portion of the standard on a prospective basis beginning in 2017 and accordingly prior periods have not been adjusted. Earnings Per Share - The Company uses the treasury stock method to compute diluted earnings per share, unless the effect would be anti-dilutive. The Company excluded the excess tax benefits from the assumed proceeds available to repurchase shares in the computation of diluted earnings per share. Upon adoption, no other aspects of ASU 2016-09 had an effect on the Company's unaudited consolidated financial statements or related footnote disclosures. (d) Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 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 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 2014-09; or (ii) retrospectively with the cumulative effect of initially applying ASU 2014-09 recognized at the date of initial application and providing certain additional disclosures as defined per ASU 2014-09. The Company is 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 the contractual arrangements and the mix of business. Upon adoption, we expect there to be a change in the manner that variable consideration in certain 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 it recognizes 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 its contractual arrangements. The Company's considerations include, but are not limited to, the comparability of its financial statements and the comparability within its industry from application of the new standard to its contractual arrangements. The Company plans 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 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net). ASU 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 2016-02, Leases (Topic 842). ASU 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 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 2016-02 must be calculated using the applicable incremental borrowing rate at the date of adoption. In addition, ASU 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 June 2016, FASB issued ASU 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 2016-13 is not expected to have a material effect on its consolidated financial statements. In August 2016, FASB issued ASU 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 15, 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 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 15, 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. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment (Topic 350), which eliminates Step 2 from the goodwill impairment test. A goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value, however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 is effective for annual and interim periods in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed after January 1, 2017 and should be applied prospectively. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements. In March, 2017, FASB issued ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost. The ASU amends ASC 715, Compensation — Retirement Benefits, to require employers that present a measure of operating income in their statement of income to include only the service cost component of net periodic pension cost and net periodic post-retirement benefit cost in operating expenses (together with other employee compensation costs). The other components of net benefit cost, including amortization of prior service cost/credit, and settlement and curtailment effects, are to be included in non-operating expenses. The update also stipulates that only the service cost component of net benefit cost is eligible for capitalization. The amendments are effective for fiscal years beginning after December 15, 2017 and interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period. The Company is currently evaluating the impact that the adoption of this guidance will have on its consolidated financial statements.

Segment and Geographical Inform

Segment and Geographical Information	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Segment and Geographical Information	Segment and 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 the Company 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 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 periods 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 our banking and financial services, utilities and consulting operating segments have been included in a category called “All Other”. Segment information for all prior periods presented herein has been changed to conform to the current presentation. This change in segment presentation does not affect the Company's unaudited 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. Revenues and cost of revenues for the three months ended March 31, 2017 and 2016, respectively, for each of the reportable segments, are as follows: Three months ended March 31, 2017 Insurance Healthcare TT&L F&A All Other Analytics Total Revenues, net $ 55,921 $ 18,932 $ 17,043 $ 21,014 $ 21,116 $ 49,007 $ 183,033 Cost of revenues (exclusive of depreciation and amortization) 38,329 12,186 10,224 12,898 14,444 32,038 120,119 Gross profit $ 17,592 $ 6,746 $ 6,819 $ 8,116 $ 6,672 $ 16,969 $ 62,914 Operating expenses 47,012 Foreign exchange gain, interest expense and other income, net 4,446 Income tax expense 3,560 Net income $ 16,788 Three months ended March 31, 2016 Insurance Healthcare TT&L F&A All Other Analytics Total Revenues, net $ 48,299 $ 16,388 $ 17,559 $ 19,818 $ 26,006 $ 38,966 $ 167,036 Cost of revenues (exclusive of depreciation and amortization) 34,269 10,545 10,463 11,444 16,887 24,771 108,379 Gross profit $ 14,030 $ 5,843 $ 7,096 $ 8,374 $ 9,119 $ 14,195 $ 58,657 Operating expenses 42,205 Foreign exchange gain, interest expense and other income, net 3,263 Income tax expense 5,895 Net income $ 13,820 Net revenues of the Company by service type, were as follows: Three months ended March 31, 2017 2016 BPM and related services (1) $ 134,026 $ 128,070 Analytics services 49,007 38,966 Total $ 183,033 $ 167,036 (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. Three months ended March 31, 2017 2016 Revenues, net United States $ 150,281 $ 134,074 Non-United States United Kingdom 26,082 27,428 Rest of World 6,670 5,534 Total Non-United States 32,752 32,962 $ 183,033 $ 167,036 Property, plant and equipment by geographic area, were as follows: As of March 31, 2017 December 31, 2016 Property, plant and equipment, net India $ 33,909 $ 23,362 United States 11,919 10,809 Philippines 10,521 11,900 Rest of World 2,871 2,958 $ 59,220 $ 49,029

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	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: Three months ended March 31, 2017 2016 Numerators: Net income $ 16,788 $ 13,820 Denominators: Basic weighted average common shares outstanding 33,845,560 33,380,028 Dilutive effect of share based awards 1,263,322 971,629 Diluted weighted average common shares outstanding 35,108,882 34,351,657 Earnings per share: Basic $ 0.50 $ 0.41 Diluted $ 0.48 $ 0.40 Weighted average common shares considered anti-dilutive in computing diluted earnings per share 452,988 200,752

Other Income, net

Other Income, net	3 Months Ended
	Mar. 31, 2017
Other Income and Expenses [Abstract]
Other Income, net	Other Income, net Other income, net consists of the following: Three months ended March 31, 2017 2016 Interest and dividend income $ 672 $ 479 Gain on mutual fund investments 1,783 1,743 Change in fair value of earn-out consideration — 250 Other, net 855 707 Other income, net $ 3,310 $ 3,179

Property, Plant and Equipment

Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2017
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, Plant and Equipment consist of the following: Estimated useful lives As of (Years) March 31, 2017 December 31, 2016 Owned Assets: Network equipment, computers and software 3-5 $ 124,938 $ 109,998 Leasehold improvements 3-8 33,038 31,192 Office furniture and equipment 3-8 16,162 15,426 Motor vehicles 2-5 602 580 Buildings 30 1,226 1,171 Land — 802 766 Capital work in progress — 7,474 4,964 184,242 164,097 Less: Accumulated depreciation and amortization (125,488 ) (115,568 ) $ 58,754 $ 48,529 Assets under capital leases: Leasehold improvements 940 854 Office furniture and equipment 193 133 Motor vehicles 797 810 1,930 1,797 Less: Accumulated depreciation and amortization (1,464 ) (1,297 ) $ 466 $ 500 Property, Plant and Equipment, net $ 59,220 $ 49,029 Depreciation and amortization expense excluding amortization of acquisition-related intangibles for the three months ended March 31, 2017 and 2016 was $5,928 , and $5,418 , respectively. T he software development costs, both as of March 31, 2017 and December 31, 2016, were $2,242 and is included under Network equipment, computers and software. Accumulated amortization expense for these capitalized software development costs as of March 31, 2017 and December 31, 2016 were $485 and $336 , 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.

Business Combinations, Goodwill

Business Combinations, Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2017
Business Combinations [Abstract]
Business Combination, Goodwill and Intangible Assets	Goodwill and Intangible Assets Business Combination Datasource Consulting, LLC. On October 22, 2016, the Company entered into a membership interests purchase agreement (the “Datasource Agreement”) for the purchase of Datasource Consulting, LLC (“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. During the three months ended March 31, 2017, the Company finalized its purchase price allocation for the acquisition 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. Goodwill The following table sets forth details of the Company’s goodwill balance as of March 31, 2017 : Insurance Healthcare TT&L F&A All Other Analytics Total Balance as at January 1, 2016 $ 35,824 $ 19,276 $ 13,278 $ 47,891 $ 5,326 $ 49,940 $ 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 $ 5,326 $ 63,538 $ 186,770 Acquisitions — — — — — — — Currency translation adjustments 37 — 520 625 — — 1,182 Balance as at March 31, 2017 $ 38,147 $ 19,276 $ 13,503 $ 48,162 $ 5,326 $ 63,538 $ 187,952 Intangible Assets Information regarding the Company’s intangible assets is set forth below: As of March 31, 2017 Gross Accumulated Net Carrying Finite-lived intangible assets: Customer relationships $ 75,249 $ (35,647 ) $ 39,602 Leasehold benefits 2,845 (2,405 ) 440 Developed technology 14,209 (7,034 ) 7,175 Non-compete agreements 2,045 (1,653 ) 392 Trade names and trademarks 5,363 (3,516 ) 1,847 $ 99,711 $ (50,255 ) $ 49,456 Indefinite-lived intangible assets: Trade names and trademarks $ 900 $ — $ 900 Total intangible assets $ 100,611 $ (50,255 ) $ 50,356 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 Amortization expense for the three months ended March 31, 2017 and 2016 was $3,498 and $2,715 , respectively. The remaining weighted average life of intangible assets was 5.7 years for customer relationships, 2.2 years for leasehold benefits, 4.7 years for developed technology, 2.3 years for non-compete agreements and 5.3 years for trade names and trademarks excluding indefinite life trade names and trademarks. Estimated amortization of intangible assets during the year ending March 31, 2018 $ 13,576 2019 12,046 2020 9,870 2021 3,328 2022 and thereafter 10,636 Total $ 49,456

Other current assets

Other current assets	3 Months Ended
	Mar. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Current Assets	Other current assets Other current assets consists of the following: As of March 31, 2017 December 31, 2016 Derivative instruments $ 7,363 $ 3,324 Advances to suppliers 2,516 1,091 Receivables from statutory authorities 13,927 11,870 Others 1,735 4,883 Other current assets $ 25,541 $ 21,168

Accrued expenses and other curr

Accrued expenses and other current liabilities	3 Months Ended
	Mar. 31, 2017
Payables and Accruals [Abstract]
Accrued expenses and other current liabilities	Accrued expenses and other current liabilities Accrued expenses and other current liabilities consists of the following: As of March 31, 2017 December 31, 2016 Accrued expenses $ 33,810 $ 30,690 Derivative instruments 1,368 1,430 Client liability account 2,783 4,005 Other current liabilities 9,709 7,139 Accrued expenses and other current liabilities $ 47,670 $ 43,264

Non-current liabilities

Non-current liabilities	3 Months Ended
	Mar. 31, 2017
Liabilities, Noncurrent [Abstract]
Non-current liabilities	Non-current liabilities Non-current liabilities consists of the following: As of March 31, 2017 December 31, 2016 Derivative instruments $ 696 $ 828 Unrecognized tax benefits 3,832 3,640 Deferred rent 7,591 7,237 Retirement benefits 2,141 1,977 Other non-current liabilities 3,469 1,137 Non-current liabilities $ 17,729 $ 14,819

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	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 topic 815 “Derivatives and Hedging” (“ASC No. 815”) . Changes in the fair values of contracts that are deemed effective are recorded as a component of accumulated other comprehensive loss until the settlement of those contracts. The balances as of March 31, 2017 and December 31, 2016 are as follows: As of March 31, 2017 December 31, 2016 Cumulative currency translation adjustments $ (65,656 ) $ (77,299 ) Unrealized gain on cash flow hedges, net of taxes of $2,967 and $1,207 9,079 2,740 Retirement benefits, net of taxes of ($335) and ($342) (436 ) (498 ) Accumulated other comprehensive loss $ (57,013 ) $ (75,057 )

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Assets and Liabilities Measured at Fair Value The following table sets forth the Company’s assets and liabilities that were accounted for at fair value as of March 31, 2017 and December 31, 2016 . The table excludes accounts receivable, accounts payable and accrued expenses for which fair values approximate their carrying amounts. As of March 31, 2017 Level 1 Level 2 Level 3 Total Assets Money market and mutual funds* $ 117,084 $ — $ — $ 117,084 Derivative financial instruments — 14,167 — 14,167 Total $ 117,084 $ 14,167 $ — $ 131,251 Liabilities Derivative financial instruments $ — $ 2,064 $ — $ 2,064 Total $ — $ 2,064 $ — $ 2,064 As of December 31, 2016 Level 1 Level 2 Level 3 Total Assets Money market and mutual funds $ — $ — $ — $ — Derivative financial instruments — 6,318 — 6,318 Total $ — $ 6,318 $ — $ 6,318 Liabilities Derivative financial instruments $ — $ 2,258 $ — $ 2,258 Total $ — $ 2,258 $ — $ 2,258 * Represents short-term investments carried on fair value option under ASC 825 "Financial Instruments" as of March 31, 2017. 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 13 to our unaudited consolidated financial statements contained herein for further details on Derivatives and Hedge Accounting.

Derivatives and Hedge Accountin

Derivatives and Hedge Accounting	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedge Accounting	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 exchange rates. The Company’s derivative financial instruments are largely foreign exchange forward contracts that are designated effective and that qualify as cash flow hedges under ASC 815. The Company had outstanding cash flow hedges totaling $240,655 as of March 31, 2017 and $218,545 as of December 31, 2016. The fair value of these cash flow hedges is included in the other comprehensive loss on the Company's unaudited 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 815. Changes in the fair value of these derivatives are recognized in the unaudited 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 $91,067 and GBP 8,264 as of March 31, 2017 and amounted to $71,318 and GBP 11,153 as of December 31, 2016. The Company estimates that approximately $5,938 of net derivative gains included in accumulated other comprehensive loss (“AOCL”) could be reclassified into earnings within the next twelve months based on exchange rates prevailing as of March 31, 2017 . At March 31, 2017 , the maximum outstanding term of the cash flow hedges was 45 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 unaudited 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 derivative amounts recorded in equity are reclassified to earnings. There were no such significant amounts of gains or losses that were reclassified from AOCL into earnings during the three months ended March 31, 2017 and 2016 . The following tables set forth the fair value of the foreign currency exchange contracts and their location on the unaudited consolidated financial statements: Derivatives designated as hedging instruments: As of March 31, 2017 December 31, 2016 Other current assets: Foreign currency exchange contracts $ 7,306 $ 3,211 Other assets: Foreign currency exchange contracts $ 6,804 $ 2,994 Accrued expenses and other current liabilities: Foreign currency exchange contracts $ 1,368 $ 1,430 Non-current liabilities: Foreign currency exchange contracts $ 696 $ 828 Derivatives not designated as hedging instruments: As of March 31, 2017 December 31, 2016 Other current assets: Foreign currency exchange contracts $ 57 $ 113 The following tables set forth the effect of foreign currency exchange contracts on the unaudited consolidated statements of income for the three months ended March 31, 2017 and 2016 : Three months ended March 31, 2017 2016 Derivatives in Cash flow hedging relationship Gain/(loss) recognized in AOCL on derivative - Effective portion $ 8,723 $ 2,437 Gain/(loss) reclassified from AOCL to foreign exchange gain/(loss) - Effective portion $ 624 $ 57 Gain/(loss) recognized in foreign exchange gain/(loss) - Ineffective portion $ — $ — Derivatives not designated as hedging instruments Gain/(loss) recognized in foreign exchange gain/(loss) $ 2,622 $ 1,729

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Borrowings	Borrowings The Company has a revolving credit facility (the “Credit Facility”), including a letter of credit sub-facility, in the amount of $100,000 . The Credit Facility has a maturity date of October 24, 2019 and is voluntarily pre-payable from time to time without premium or penalty. Borrowings under the Credit Facility may be used for working capital, general corporate purposes and for acquisitions. The amount outstanding as of March 31, 2017 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 unaudited consolidated balance sheets. The Credit Facility carried an effective interest rate of 2.50% per annum and 1.90% per annum, during the three months ended March 31, 2017 and 2016, respectively. In connection with the financing, the Company incurred certain 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 March 31, 2017 and December 31, 2016 was $248 and $272 , respectively, and is included under "other current assets" and "other assets" in the unaudited 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. As of March 31, 2017, the Company was in compliance with the financial covenants listed above.

Capital Structure

Capital Structure	3 Months Ended
	Mar. 31, 2017
Equity [Abstract]
Capital Structure	Capital Structure Common Stock The Company has one class of common stock outstanding. During the three months ended March 31, 2017 and 2016 , the Company acquired 62,784 and 14,548 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 $2,913 and $652 , respectively. The weighted average purchase price per share of $46.39 and $44.83 , 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 a common stock repurchase program (the “2014 Repurchase Program”), under which shares were authorized to be purchased by the Company from time to time from the open market and through private transactions during each of the fiscal years 2015 through 2017 up to an annual amount of $20,000 . On February 28, 2017, the Company’s Board of Directors authorized an additional common stock repurchase program (the “2017 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 2017 through 2019 up to an aggregate amount of $100,000 . The approval increases the 2017 authorization from $20,000 to $40,000 and authorizes stock repurchases of up to $40,000 in each of 2018 and 2019. During the three months ended March 31, 2017 and 2016, the Company purchased 193,962 and 138,638 shares of its common stock, respectively, for an aggregate purchase price of approximately $9,000 and $6,202 , respectively, including commissions, representing an average purchase price per share of $46.40 and $44.74 , respectively, under the 2014 and 2017 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.

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2017
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	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. Net gratuity cost includes the following components: Three months ended March 31, 2017 2016 Service cost $ 484 $ 400 Interest cost 162 149 Expected return on plan assets (107 ) (104 ) Amortization of Actuarial loss 69 22 Net gratuity cost $ 608 $ 467 The 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. The Company earned a return of approximately 8.0% on these Gratuity Plans for the period ended March 31, 2017. Change in Plan Assets Plan assets at January 1, 2017 $ 5,640 Actual return 88 Benefits paid (194 ) Effect of exchange rate changes 266 Plan assets at March 31, 2017 $ 5,800 The Company maintains several 401(k) Plans 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 4% of employee compensation within certain limits. Contributions to the 401(k) Plans amounting to $1,068 and $932 were made during the three months ended March 31, 2017 and 2016, respectively. During the three months ended March 31, 2017 and 2016 , the Company contributed $1,713 and $1,466 , 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

Leases	3 Months Ended
	Mar. 31, 2017
Leases [Abstract]
Leases	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 March 31, 2017 are as follows: Year ending March 31, 2018 $ 269 2019 174 2020 114 2021 43 Total minimum lease payments 600 Less: amount representing interest 99 Present value of minimum lease payments 501 Less: current portion 216 Long term capital lease obligation $ 285 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 March 31, 2017 are set forth below: Year ending March 31, 2018 $ 10,218 2019 8,853 2020 5,628 2021 3,743 2022 1,540 2023 and thereafter 915 $ 30,897 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 $5,667 and $5,148 for the three months ended March 31, 2017 and 2016 , respectively. Deferred rent as of March 31, 2017 and December 31, 2016 was $8,441 and $7,915 , respectively, and is included under “Accrued expenses and other current liabilities” and “Non-current liabilities” in the unaudited consolidated balance sheets.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company determines the tax provision for interim periods using an estimate of its annual effective tax rate adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter, the Company updates its estimate of annual effective tax rate, and if its estimated tax rate changes, the Company makes a cumulative adjustment. The Company recorded income tax expense of $3,560 and $5,895 for the three months ended March 31, 2017 and 2016, respectively. The effective tax rate decreased from 29.9% during the three months ended March 31, 2016 to 17.5% (including the impact of a discrete item of $2,057 recognized on adoption of ASU No. 2016-09) during the three months ended March 31, 2017. Other than the impact of the adoption of the accounting standard mentioned above, the decrease is primarily due to higher earnings from our foreign subsidiaries and lower domestic profit in the U.S. The following table summarizes the activity related to the gross unrecognized tax benefits from January 1, 2017 through March 31, 2017 : Balance as of January 1, 2017 $ 3,087 Increases related to prior year tax positions — Decreases related to prior year tax positions — Increases related to current year tax positions — Decreases related to current year tax positions — Effect of exchange rate changes 78 Balance as of March 31, 2017 $ 3,165 The unrecognized tax benefits as of March 31, 2017 of $3,165 , if recognized, would impact the effective tax rate. During the three months ended March 31, 2017 and 2016, the Company has recognized interest of $51 and $50 , respectively, which are included in the income tax expense in the unaudited consolidated statements of income. As of March 31, 2017 and December 31, 2016, the Company has accrued interest and penalties of $1,667 and $1,553 , relating to unrecognized tax benefits.

Stock Based Compensation

Stock Based Compensation	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Based Compensation	Stock-Based Compensation The following costs related to the Company’s stock-based compensation plan are included in the unaudited consolidated statements of income: Three months ended March 31, 2017 2016 Cost of revenue $ 1,210 $ 1,265 General and administrative expenses 2,596 2,372 Selling and marketing expenses 2,150 2,172 Total $ 5,956 $ 5,809 As of March 31, 2017 , the Company had 1,414,544 shares available for grant under the 2015 Amendment and Restatement of the 2006 Omnibus Award Plan. Stock Options Stock option activity under the Company’s stock plans is shown below: Number of Weighted- Aggregate Weighted- Outstanding at December 31, 2016 811,902 $ 16.31 $ 27,718 2.96 Granted — — Exercised (7,970 ) 23.99 Forfeited — — Outstanding at March 31, 2017 803,932 $ 16.23 $ 25,031 2.70 Vested and exercisable at March 31, 2017 803,932 $ 16.23 $ 25,031 2.70 The unrecognized compensation cost for outstanding options as of March 31, 2017 is nil . The Company did no t grant any options during the three months ended March 31, 2017 and 2016. The total grant date fair value of options vested during the three months ended March 31, 2017 and 2016 was nil and $706 , respectively. Restricted Stock and Restricted Stock Units 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, 2016* 246,940 $ 42.42 1,256,288 $ 37.38 Granted — — 372,019 47.71 Vested (24,426 ) 35.91 (371,374 ) 34.56 Forfeited — — (13,890 ) 41.66 Outstanding at March 31, 2017* 222,514 $ 43.13 1,243,043 $ 41.27 * As of March 31, 2017 and December 31, 2016 restricted stock units vested for which the underlying common stock is yet to be issued are 138,328 and 135,054 , respectively. As of March 31, 2017 , unrecognized compensation cost of $50,650 is expected to be expensed over a weighted average period of 3.07 years. Performance Based Stock Awards Performance restricted stock unit (the "PRSUs") 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, 2016 115,174 $ 41.70 215,171 $ 47.42 Granted 61,123 47.73 61,111 54.10 Vested — — — — Forfeited — — — — Outstanding at March 31, 2017 176,297 $ 43.79 276,282 $ 48.90 As of March 31, 2017 , unrecognized compensation cost of $12,365 is expected to be expensed over a weighted average period of 2.13 years.

Related Party Disclosures

Related Party Disclosures	3 Months Ended
	Mar. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Disclosures The Company provides consulting services to PharmaCord, LLC. One of the Company’s directors, Nitin Sahney, is the member-manager and chief executive officer of PharmaCord, LLC. The Company recognized revenue of approximately $477 and nil in the three months ended March 31, 2017 and March 31, 2016, respectively, for fees and expense reimbursements from PharmaCord, LLC. At March 31, 2017 and December 31, 2016, the Company had an account receivable of $295 and nil , respectively, related to these services.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Fixed Asset Commitments At March 31, 2017 , the Company has committed to spend approximately $13,534 under agreements to purchase fixed assets. 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 ExlService Philippines, Inc. 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 some 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 Indian tax authorities from the Company related to its transfer pricing issues for years ranging from tax years 2003 to 2014 and its permanent establishment issues ranging from tax years 2003 to 2007 as of March 31, 2017 and December 31, 2016 is $17,906 and $17,963 , respectively, of which the Company has made payments or provided bank guarantee to the extent $8,512 and $8,640 , respectively. Amounts paid as deposits in respect of such assessments aggregating to $6,469 and $6,690 as of March 31, 2017 and December 31, 2016 , respectively, are included in “Other assets” and amounts deposited for bank guarantees aggregating to $2,043 and $1,950 as of March 31, 2017 and December 31, 2016 , respectively, are included in “Restricted cash” in the non-current assets section of the Company’s consolidated balance sheets as of March 31, 2017 and December 31, 2016 . 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 Accoun29

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Preparation	Basis of Preparation and Principles of Consolidation The unaudited interim consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“US GAAP”) for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by US GAAP for annual financial statements and therefore should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016. The unaudited interim consolidated financial statements reflect all adjustments (of a normal and recurring nature) that management considers necessary for a fair presentation of such statements for the interim periods presented. The unaudited consolidated statements of income for the interim periods presented are not necessarily indicative of the results for the full year or for any subsequent period. The accompanying unaudited consolidated financial statements include 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 and it represents the minority partner’s interest in the operations of ExlService Colombia S.A.S. 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 all the periods presented were insignificant and are included under general and administrative expenses in the unaudited consolidated statements of income.
Principles of Consolidation	Basis of Preparation and Principles of Consolidation The unaudited interim consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“US GAAP”) for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by US GAAP for annual financial statements and therefore should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016. The unaudited interim consolidated financial statements reflect all adjustments (of a normal and recurring nature) that management considers necessary for a fair presentation of such statements for the interim periods presented. The unaudited consolidated statements of income for the interim periods presented are not necessarily indicative of the results for the full year or for any subsequent period. The accompanying unaudited consolidated financial statements include 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 and it represents the minority partner’s interest in the operations of ExlService Colombia S.A.S. 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 all the periods presented were insignificant and are included under general and administrative expenses in the unaudited consolidated statements of income.
Use of Estimates	Use of Estimates The preparation of the unaudited 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 unaudited consolidated financial statements and the unaudited consolidated statements of income 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.
Recent Accounting Pronouncements	Share-Based Compensation 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 adopted this ASU effective January 1, 2017. The following summarizes the effects of the adoption on the Company's unaudited consolidated financial statements: Income taxes - Upon adoption of this standard, all excess tax benefits and tax deficiencies are recognized as income tax expense or benefit in the income statement. The tax effects of exercised or vested awards are treated as discrete items in the reporting period in which they occur. The Company also recognizes excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. As a result, the Company recognized discrete adjustments to income tax expense for the three months ended March 31, 2017, in the amount of $2,057 , related to excess tax benefits. No adjustment is recorded for any windfall benefits previously recorded in APIC. Forfeitures - Prior to adoption, share-based compensation expense was recognized on a straight line basis, net of estimated forfeitures, such that expense was recognized only for share-based awards that are expected to vest. A forfeiture rate was estimated annually and revised, if necessary, in subsequent periods if actual forfeitures differed from initial estimates. Upon adoption, the Company will no longer apply a forfeiture rate and instead will account for forfeitures as they occur. The Company has applied the modified retrospective adoption approach as of January 1, 2017 and has recognized a cumulative-effect adjustment to reduce additional paid-in-capital of $5,999 and retained earnings of $4,546 (net of deferred tax effect of $1,453 ). Statements of Cash Flows - The Company historically accounted for excess tax benefits on the Statement of Cash Flows as a financing activity. Upon adoption of this standard, excess tax benefits are classified along with other income tax cash flows as an operating activity. The Company has elected to adopt this portion of the standard on a prospective basis beginning in 2017 and accordingly prior periods have not been adjusted. Earnings Per Share - The Company uses the treasury stock method to compute diluted earnings per share, unless the effect would be anti-dilutive. The Company excluded the excess tax benefits from the assumed proceeds available to repurchase shares in the computation of diluted earnings per share. Upon adoption, no other aspects of ASU 2016-09 had an effect on the Company's unaudited consolidated financial statements or related footnote disclosures. (d) Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 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 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 2014-09; or (ii) retrospectively with the cumulative effect of initially applying ASU 2014-09 recognized at the date of initial application and providing certain additional disclosures as defined per ASU 2014-09. The Company is 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 the contractual arrangements and the mix of business. Upon adoption, we expect there to be a change in the manner that variable consideration in certain 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 it recognizes 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 its contractual arrangements. The Company's considerations include, but are not limited to, the comparability of its financial statements and the comparability within its industry from application of the new standard to its contractual arrangements. The Company plans 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 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net). ASU 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 2016-02, Leases (Topic 842). ASU 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 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 2016-02 must be calculated using the applicable incremental borrowing rate at the date of adoption. In addition, ASU 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 June 2016, FASB issued ASU 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 2016-13 is not expected to have a material effect on its consolidated financial statements. In August 2016, FASB issued ASU 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 15, 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 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 15, 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. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment (Topic 350), which eliminates Step 2 from the goodwill impairment test. A goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value, however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 is effective for annual and interim periods in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed after January 1, 2017 and should be applied prospectively. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements. In March, 2017, FASB issued ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost. The ASU amends ASC 715, Compensation — Retirement Benefits, to require employers that present a measure of operating income in their statement of income to include only the service cost component of net periodic pension cost and net periodic post-retirement benefit cost in operating expenses (together with other employee compensation costs). The other components of net benefit cost, including amortization of prior service cost/credit, and settlement and curtailment effects, are to be included in non-operating expenses. The update also stipulates that only the service cost component of net benefit cost is eligible for capitalization. The amendments are effective for fiscal years beginning after December 15, 2017 and interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual period. The Company is currently evaluating the impact that the adoption of this guidance will have on its consolidated financial statements.

Segment and Geographical Info30

Segment and Geographical Information (Tables)	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Revenues and Cost of Revenues for Company's Reportable Segments	Revenues and cost of revenues for the three months ended March 31, 2017 and 2016, respectively, for each of the reportable segments, are as follows: Three months ended March 31, 2017 Insurance Healthcare TT&L F&A All Other Analytics Total Revenues, net $ 55,921 $ 18,932 $ 17,043 $ 21,014 $ 21,116 $ 49,007 $ 183,033 Cost of revenues (exclusive of depreciation and amortization) 38,329 12,186 10,224 12,898 14,444 32,038 120,119 Gross profit $ 17,592 $ 6,746 $ 6,819 $ 8,116 $ 6,672 $ 16,969 $ 62,914 Operating expenses 47,012 Foreign exchange gain, interest expense and other income, net 4,446 Income tax expense 3,560 Net income $ 16,788 Three months ended March 31, 2016 Insurance Healthcare TT&L F&A All Other Analytics Total Revenues, net $ 48,299 $ 16,388 $ 17,559 $ 19,818 $ 26,006 $ 38,966 $ 167,036 Cost of revenues (exclusive of depreciation and amortization) 34,269 10,545 10,463 11,444 16,887 24,771 108,379 Gross profit $ 14,030 $ 5,843 $ 7,096 $ 8,374 $ 9,119 $ 14,195 $ 58,657 Operating expenses 42,205 Foreign exchange gain, interest expense and other income, net 3,263 Income tax expense 5,895 Net income $ 13,820 Net revenues of the Company by service type, were as follows: Three months ended March 31, 2017 2016 BPM and related services (1) $ 134,026 $ 128,070 Analytics services 49,007 38,966 Total $ 183,033 $ 167,036 (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. Three months ended March 31, 2017 2016 Revenues, net United States $ 150,281 $ 134,074 Non-United States United Kingdom 26,082 27,428 Rest of World 6,670 5,534 Total Non-United States 32,752 32,962 $ 183,033 $ 167,036
Property, Plant and Equipment based on Geographical Information	Property, plant and equipment by geographic area, were as follows: As of March 31, 2017 December 31, 2016 Property, plant and equipment, net India $ 33,909 $ 23,362 United States 11,919 10,809 Philippines 10,521 11,900 Rest of World 2,871 2,958 $ 59,220 $ 49,029

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2017
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: Three months ended March 31, 2017 2016 Numerators: Net income $ 16,788 $ 13,820 Denominators: Basic weighted average common shares outstanding 33,845,560 33,380,028 Dilutive effect of share based awards 1,263,322 971,629 Diluted weighted average common shares outstanding 35,108,882 34,351,657 Earnings per share: Basic $ 0.50 $ 0.41 Diluted $ 0.48 $ 0.40 Weighted average common shares considered anti-dilutive in computing diluted earnings per share 452,988 200,752

Other Income, net (Tables)

Other Income, net (Tables)	3 Months Ended
	Mar. 31, 2017
Other Income and Expenses [Abstract]
Summary of Other Income, net	Other income, net consists of the following: Three months ended March 31, 2017 2016 Interest and dividend income $ 672 $ 479 Gain on mutual fund investments 1,783 1,743 Change in fair value of earn-out consideration — 250 Other, net 855 707 Other income, net $ 3,310 $ 3,179

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2017
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, Plant and Equipment consist of the following: Estimated useful lives As of (Years) March 31, 2017 December 31, 2016 Owned Assets: Network equipment, computers and software 3-5 $ 124,938 $ 109,998 Leasehold improvements 3-8 33,038 31,192 Office furniture and equipment 3-8 16,162 15,426 Motor vehicles 2-5 602 580 Buildings 30 1,226 1,171 Land — 802 766 Capital work in progress — 7,474 4,964 184,242 164,097 Less: Accumulated depreciation and amortization (125,488 ) (115,568 ) $ 58,754 $ 48,529 Assets under capital leases: Leasehold improvements 940 854 Office furniture and equipment 193 133 Motor vehicles 797 810 1,930 1,797 Less: Accumulated depreciation and amortization (1,464 ) (1,297 ) $ 466 $ 500 Property, Plant and Equipment, net $ 59,220 $ 49,029

Business Combinations, Goodwi34

Business Combinations, Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Business Combinations [Abstract]
Summary of Purchase Price Allocation for Acquisition	During the three months ended March 31, 2017, the Company finalized its purchase price allocation for the acquisition 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
Summary of Company's Goodwill	The following table sets forth details of the Company’s goodwill balance as of March 31, 2017 : Insurance Healthcare TT&L F&A All Other Analytics Total Balance as at January 1, 2016 $ 35,824 $ 19,276 $ 13,278 $ 47,891 $ 5,326 $ 49,940 $ 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 $ 5,326 $ 63,538 $ 186,770 Acquisitions — — — — — — — Currency translation adjustments 37 — 520 625 — — 1,182 Balance as at March 31, 2017 $ 38,147 $ 19,276 $ 13,503 $ 48,162 $ 5,326 $ 63,538 $ 187,952
Summary of Company's Intangible Assets	Information regarding the Company’s intangible assets is set forth below: As of March 31, 2017 Gross Accumulated Net Carrying Finite-lived intangible assets: Customer relationships $ 75,249 $ (35,647 ) $ 39,602 Leasehold benefits 2,845 (2,405 ) 440 Developed technology 14,209 (7,034 ) 7,175 Non-compete agreements 2,045 (1,653 ) 392 Trade names and trademarks 5,363 (3,516 ) 1,847 $ 99,711 $ (50,255 ) $ 49,456 Indefinite-lived intangible assets: Trade names and trademarks $ 900 $ — $ 900 Total intangible assets $ 100,611 $ (50,255 ) $ 50,356 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
Estimated Amortization of Intangible Assets	Estimated amortization of intangible assets during the year ending March 31, 2018 $ 13,576 2019 12,046 2020 9,870 2021 3,328 2022 and thereafter 10,636 Total $ 49,456

Other current assets (Tables)

Other current assets (Tables)	3 Months Ended
	Mar. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Current Assets	Other current assets consists of the following: As of March 31, 2017 December 31, 2016 Derivative instruments $ 7,363 $ 3,324 Advances to suppliers 2,516 1,091 Receivables from statutory authorities 13,927 11,870 Others 1,735 4,883 Other current assets $ 25,541 $ 21,168

Accrued expenses and other cu36

Accrued expenses and other current liabilities (Tables)	3 Months Ended
	Mar. 31, 2017
Payables and Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consists of the following: As of March 31, 2017 December 31, 2016 Accrued expenses $ 33,810 $ 30,690 Derivative instruments 1,368 1,430 Client liability account 2,783 4,005 Other current liabilities 9,709 7,139 Accrued expenses and other current liabilities $ 47,670 $ 43,264

Non-current liabilities (Tables

Non-current liabilities (Tables)	3 Months Ended
	Mar. 31, 2017
Liabilities, Noncurrent [Abstract]
Summary of Non-Current Liabilities	Non-current liabilities consists of the following: As of March 31, 2017 December 31, 2016 Derivative instruments $ 696 $ 828 Unrecognized tax benefits 3,832 3,640 Deferred rent 7,591 7,237 Retirement benefits 2,141 1,977 Other non-current liabilities 3,469 1,137 Non-current liabilities $ 17,729 $ 14,819

Accumulated Other Comprehensi38

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Loss	The balances as of March 31, 2017 and December 31, 2016 are as follows: As of March 31, 2017 December 31, 2016 Cumulative currency translation adjustments $ (65,656 ) $ (77,299 ) Unrealized gain on cash flow hedges, net of taxes of $2,967 and $1,207 9,079 2,740 Retirement benefits, net of taxes of ($335) and ($342) (436 ) (498 ) Accumulated other comprehensive loss $ (57,013 ) $ (75,057 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value	The following table sets forth the Company’s assets and liabilities that were accounted for at fair value as of March 31, 2017 and December 31, 2016 . The table excludes accounts receivable, accounts payable and accrued expenses for which fair values approximate their carrying amounts. As of March 31, 2017 Level 1 Level 2 Level 3 Total Assets Money market and mutual funds* $ 117,084 $ — $ — $ 117,084 Derivative financial instruments — 14,167 — 14,167 Total $ 117,084 $ 14,167 $ — $ 131,251 Liabilities Derivative financial instruments $ — $ 2,064 $ — $ 2,064 Total $ — $ 2,064 $ — $ 2,064 As of December 31, 2016 Level 1 Level 2 Level 3 Total Assets Money market and mutual funds $ — $ — $ — $ — Derivative financial instruments — 6,318 — 6,318 Total $ — $ 6,318 $ — $ 6,318 Liabilities Derivative financial instruments $ — $ 2,258 $ — $ 2,258 Total $ — $ 2,258 $ — $ 2,258 * Represents short-term investments carried on fair value option under ASC 825 "Financial Instruments" as of March 31, 2017.

Derivatives and Hedge Account40

Derivatives and Hedge Accounting (Tables)	3 Months Ended
	Mar. 31, 2017
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 unaudited consolidated financial statements: Derivatives designated as hedging instruments: As of March 31, 2017 December 31, 2016 Other current assets: Foreign currency exchange contracts $ 7,306 $ 3,211 Other assets: Foreign currency exchange contracts $ 6,804 $ 2,994 Accrued expenses and other current liabilities: Foreign currency exchange contracts $ 1,368 $ 1,430 Non-current liabilities: Foreign currency exchange contracts $ 696 $ 828 Derivatives not designated as hedging instruments: As of March 31, 2017 December 31, 2016 Other current assets: Foreign currency exchange contracts $ 57 $ 113
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 unaudited consolidated statements of income for the three months ended March 31, 2017 and 2016 : Three months ended March 31, 2017 2016 Derivatives in Cash flow hedging relationship Gain/(loss) recognized in AOCL on derivative - Effective portion $ 8,723 $ 2,437 Gain/(loss) reclassified from AOCL to foreign exchange gain/(loss) - Effective portion $ 624 $ 57 Gain/(loss) recognized in foreign exchange gain/(loss) - Ineffective portion $ — $ — Derivatives not designated as hedging instruments Gain/(loss) recognized in foreign exchange gain/(loss) $ 2,622 $ 1,729

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2017
Compensation and Retirement Disclosure [Abstract]
Net Gratuity Cost	Net gratuity cost includes the following components: Three months ended March 31, 2017 2016 Service cost $ 484 $ 400 Interest cost 162 149 Expected return on plan assets (107 ) (104 ) Amortization of Actuarial loss 69 22 Net gratuity cost $ 608 $ 467
Change in Plan Assets	Change in Plan Assets Plan assets at January 1, 2017 $ 5,640 Actual return 88 Benefits paid (194 ) Effect of exchange rate changes 266 Plan assets at March 31, 2017 $ 5,800

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2017
Leases [Abstract]
Future Minimum Lease Payments under Capital Leases	Future minimum lease payments under these capital leases as of March 31, 2017 are as follows: Year ending March 31, 2018 $ 269 2019 174 2020 114 2021 43 Total minimum lease payments 600 Less: amount representing interest 99 Present value of minimum lease payments 501 Less: current portion 216 Long term capital lease obligation $ 285
Future Minimum Lease Payments under Non-Cancelable Operating Lease Agreements	Future minimum lease payments under non-cancelable agreements expiring after March 31, 2017 are set forth below: Year ending March 31, 2018 $ 10,218 2019 8,853 2020 5,628 2021 3,743 2022 1,540 2023 and thereafter 915 $ 30,897

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
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, 2017 through March 31, 2017 : Balance as of January 1, 2017 $ 3,087 Increases related to prior year tax positions — Decreases related to prior year tax positions — Increases related to current year tax positions — Decreases related to current year tax positions — Effect of exchange rate changes 78 Balance as of March 31, 2017 $ 3,165

Stock Based Compensation (Table

Stock Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Costs Related to Company's Stock-Based Compensation Plan	The following costs related to the Company’s stock-based compensation plan are included in the unaudited consolidated statements of income: Three months ended March 31, 2017 2016 Cost of revenue $ 1,210 $ 1,265 General and administrative expenses 2,596 2,372 Selling and marketing expenses 2,150 2,172 Total $ 5,956 $ 5,809
Stock Based Compensation Stock Option Activity	Stock option activity under the Company’s stock plans is shown below: Number of Weighted- Aggregate Weighted- Outstanding at December 31, 2016 811,902 $ 16.31 $ 27,718 2.96 Granted — — Exercised (7,970 ) 23.99 Forfeited — — Outstanding at March 31, 2017 803,932 $ 16.23 $ 25,031 2.70 Vested and exercisable at March 31, 2017 803,932 $ 16.23 $ 25,031 2.70
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, 2016* 246,940 $ 42.42 1,256,288 $ 37.38 Granted — — 372,019 47.71 Vested (24,426 ) 35.91 (371,374 ) 34.56 Forfeited — — (13,890 ) 41.66 Outstanding at March 31, 2017* 222,514 $ 43.13 1,243,043 $ 41.27 * As of March 31, 2017 and December 31, 2016 restricted stock units vested for which the underlying common stock is yet to be issued are 138,328 and 135,054 , respectively.
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 (the "PRSUs") 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, 2016 115,174 $ 41.70 215,171 $ 47.42 Granted 61,123 47.73 61,111 54.10 Vested — — — — Forfeited — — — — Outstanding at March 31, 2017 176,297 $ 43.79 276,282 $ 48.90

Summary of Significant Accoun45

Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Employee service share-based compensation, tax benefit realized from exercise of stock options	$ 2,057
Accounting Standards Update 2016-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax effect		$ 1,453
Accounting Standards Update 2016-09 | Additional Paid-in Capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment		5,999
Accounting Standards Update 2016-09 | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment		$ 4,546

Segment and Geographical Info46

Segment and Geographical Information - Additional Information (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2017operating_segment	Dec. 31, 2015Segment
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 and Geographical Info47

Segment and Geographical Information - Revenues and Cost of Revenues for Company's Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	$ 183,033	$ 167,036
Cost of revenues (exclusive of depreciation and amortization)	120,119	108,379
Gross profit	62,914	58,657
Operating expenses	47,012	42,205
Foreign exchange gain, interest expense and other income, net	4,446	3,263
Income tax expense	3,560	5,895
Net income	16,788	13,820
Insurance
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	55,921	48,299
Cost of revenues (exclusive of depreciation and amortization)	38,329	34,269
Gross profit	17,592	14,030
Healthcare
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	18,932	16,388
Cost of revenues (exclusive of depreciation and amortization)	12,186	10,545
Gross profit	6,746	5,843
Travel, Transportation and Logistics
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	17,043	17,559
Cost of revenues (exclusive of depreciation and amortization)	10,224	10,463
Gross profit	6,819	7,096
Finance and Accounting
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	21,014	19,818
Cost of revenues (exclusive of depreciation and amortization)	12,898	11,444
Gross profit	8,116	8,374
All Other
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	21,116	26,006
Cost of revenues (exclusive of depreciation and amortization)	14,444	16,887
Gross profit	6,672	9,119
Analytics
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	49,007	38,966
Cost of revenues (exclusive of depreciation and amortization)	32,038	24,771
Gross profit	16,969	14,195
BPM and Related Services
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	134,026	128,070
Analytics Services
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenues, net	$ 49,007	$ 38,966

Segment and Geographical Info48

Segment and Geographical Information - Revenues based on Geographical Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues, net	$ 183,033	$ 167,036
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues, net	150,281	134,074
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues, net	26,082	27,428
Rest of World
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues, net	6,670	5,534
Non-US
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues, net	$ 32,752	$ 32,962

Segment and Geographical Info49

Segment and Geographical Information - Property, Plant and Equipment, Net Based On Geographical Information (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 59,220	$ 49,029
India
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	33,909	23,362
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	11,919	10,809
Philippines
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	10,521	11,900
Rest of World
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 2,871	$ 2,958

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Numerators:
Net income	$ 16,788	$ 13,820
Denominators:
Basic weighted average common shares outstanding (in shares)	33,845,560	33,380,028
Dilutive effect of share based awards (in shares)	1,263,322	971,629
Diluted weighted average common shares outstanding (in shares)	35,108,882	34,351,657
Earnings Per Share:
Basic (in dollars per share)	$ 0.50	$ 0.41
Diluted (in dollars per share)	$ 0.48	$ 0.40
Weighted average common shares considered anti-dilutive in computing diluted earnings per share (in shares)	452,988	200,752

Other Income, net - Summary of

Other Income, net - Summary of Other Income, net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Income and Expenses [Abstract]
Interest and dividend income	$ 672	$ 479
Gain on mutual fund investments	1,783	1,743
Change in fair value of earn-out consideration	0	250
Other, net	855	707
Other income, net	$ 3,310	$ 3,179

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Owned Assets:
Owned assets, gross	$ 184,242	$ 164,097
Less: Accumulated depreciation and amortization	(125,488)	(115,568)
Owned Assets, net	58,754	48,529
Assets under capital leases:
Capital leased assets, gross	1,930	1,797
Less: Accumulated depreciation and amortization	(1,464)	(1,297)
Assets under capital leases, net	466	500
Property, Plant and Equipment, net	59,220	49,029
Network equipment, computers and software
Owned Assets:
Owned assets, gross	124,938	109,998
Leasehold improvements
Owned Assets:
Owned assets, gross	33,038	31,192
Assets under capital leases:
Capital leased assets, gross	940	854
Office furniture and equipment
Owned Assets:
Owned assets, gross	16,162	15,426
Assets under capital leases:
Capital leased assets, gross	193	133
Motor vehicles
Owned Assets:
Owned assets, gross	602	580
Assets under capital leases:
Capital leased assets, gross	797	810
Buildings
Owned Assets:
Owned assets, gross	$ 1,226	1,171
Equipment useful life (in years)	30 years
Land
Owned Assets:
Owned assets, gross	$ 802	766
Capital work in progress
Owned Assets:
Owned assets, gross	$ 7,474	$ 4,964
Minimum | Network equipment, computers and software
Owned Assets:
Equipment useful life (in years)	3 years
Minimum | Leasehold improvements
Owned Assets:
Equipment useful life (in years)	3 years
Minimum | Office furniture and equipment
Owned Assets:
Equipment useful life (in years)	3 years
Minimum | Motor vehicles
Owned Assets:
Equipment useful life (in years)	2 years
Maximum | Network equipment, computers and software
Owned Assets:
Equipment useful life (in years)	5 years
Maximum | Leasehold improvements
Owned Assets:
Equipment useful life (in years)	8 years
Maximum | Office furniture and equipment
Owned Assets:
Equipment useful life (in years)	8 years
Maximum | Motor vehicles
Owned Assets:
Equipment useful life (in years)	5 years

Property, Plant and Equipment53

Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 5,928	$ 5,418
Software development costs	2,242		$ 2,242
Capitalized software development costs, accumulated amortization	$ 485		$ 336

Business Combinations, Goodwi54

Business Combinations, Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	Oct. 22, 2016	Mar. 31, 2017	Mar. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense		$ 3,498	$ 2,715
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)		5 years 8 months 12 days
Leasehold benefits
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)		2 years 2 months 12 days
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)		4 years 8 months 12 days
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)		2 years 3 months 18 days
Trade names and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining amortization period (in years)		5 years 3 months 18 days
Datasource Consulting, LLC
Acquired Finite-Lived Intangible Assets [Line Items]
Consideration transferred	$ 20,318
Datasource Consulting, LLC | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life (in years)		6 years
Datasource Consulting, LLC | Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life (in years)		5 years
Datasource Consulting, LLC | Trade names and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life (in years)		3 years
Restricted Stock | Datasource Consulting, LLC
Acquired Finite-Lived Intangible Assets [Line Items]
Restricted common stock issued (in shares)	93,604
Restricted common stock issued, fair value	$ 4,483
Vesting period (in years)	4 years

Business Combinations, Goodwi55

Business Combinations, Goodwill and Intangible Assets - Summary of Purchase Price Allocation for Acquisition (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill	$ 187,952	$ 186,770	$ 171,535
Datasource Consulting, LLC
Business Acquisition [Line Items]
Tangible assets	3,582
Tangible liabilities	(1,503)
Goodwill	10,999
Total purchase price	20,318
Customer relationships | Datasource Consulting, LLC
Business Acquisition [Line Items]
Identifiable intangible assets	6,340
Developed technology | Datasource Consulting, LLC
Business Acquisition [Line Items]
Identifiable intangible assets	520
Trade names and trademarks | Datasource Consulting, LLC
Business Acquisition [Line Items]
Identifiable intangible assets	$ 380

Business Combinations, Goodwi56

Business Combinations, Goodwill and Intangible Assets - Summary of Company's Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Beginning Balance	$ 186,770	$ 171,535
Goodwill arising from acquisition	0	16,108
Currency translation adjustments	1,182	(873)
Ending Balance	187,952	186,770
Insurance
Goodwill [Roll Forward]
Beginning Balance	38,110	35,824
Goodwill arising from acquisition	0	2,510
Currency translation adjustments	37	(224)
Ending Balance	38,147	38,110
Healthcare
Goodwill [Roll Forward]
Beginning Balance	19,276	19,276
Goodwill arising from acquisition	0	0
Currency translation adjustments	0	0
Ending Balance	19,276	19,276
Travel, Transportation and Logistics
Goodwill [Roll Forward]
Beginning Balance	12,983	13,278
Goodwill arising from acquisition	0	0
Currency translation adjustments	520	(295)
Ending Balance	13,503	12,983
Finance and Accounting
Goodwill [Roll Forward]
Beginning Balance	47,537	47,891
Goodwill arising from acquisition	0	0
Currency translation adjustments	625	(354)
Ending Balance	48,162	47,537
All Other
Goodwill [Roll Forward]
Beginning Balance	5,326	5,326
Goodwill arising from acquisition	0	0
Currency translation adjustments	0	0
Ending Balance	5,326	5,326
Analytics
Goodwill [Roll Forward]
Beginning Balance	63,538	49,940
Goodwill arising from acquisition	0	13,598
Currency translation adjustments	0	0
Ending Balance	$ 63,538	$ 63,538

Business Combinations, Goodwi57

Business Combinations, Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 99,711	$ 99,487
Accumulated amortization	(50,255)	(46,617)
Total	49,456	52,870
Intangible assets, gross	100,611	100,387
Intangible assets, net	50,356	53,770
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	75,249	75,181
Accumulated amortization	(35,647)	(32,968)
Total	39,602	42,213
Leasehold benefits
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,845	2,715
Accumulated amortization	(2,405)	(2,247)
Total	440	468
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	14,209	14,186
Accumulated amortization	(7,034)	(6,468)
Total	7,175	7,718
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,045	2,045
Accumulated amortization	(1,653)	(1,612)
Total	392	433
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	5,363	5,360
Accumulated amortization	(3,516)	(3,322)
Total	1,847	2,038
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, trade names and trademarks	$ 900	$ 900

Business Combinations, Goodwi58

Business Combinations, Goodwill and Intangible Assets - Estimated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Business Combinations [Abstract]
2,018	$ 13,576
2,019	12,046
2,020	9,870
2,021	3,328
2022 and thereafter	10,636
Total	$ 49,456	$ 52,870

Other current assets - Schedule

Other current assets - Schedule of Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Derivative instruments	$ 7,363	$ 3,324
Advances to suppliers	2,516	1,091
Receivables from statutory authorities	13,927	11,870
Others	1,735	4,883
Other current assets	$ 25,541	$ 21,168

Accrued expenses and other cu60

Accrued expenses and other current liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Accrued expenses	$ 33,810	$ 30,690
Derivative instruments	1,368	1,430
Client liability account	2,783	4,005
Other current liabilities	9,709	7,139
Accrued expenses and other current liabilities	$ 47,670	$ 43,264

Non-current liabilities - Summa

Non-current liabilities - Summary of Non-Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Liabilities, Noncurrent [Abstract]
Derivative instruments	$ 696	$ 828
Unrecognized tax benefits	3,832	3,640
Deferred rent	7,591	7,237
Retirement benefits	2,141	1,977
Other non-current liabilities	3,469	1,137
Non-current liabilities	$ 17,729	$ 14,819

Accumulated Other Comprehensi62

Accumulated Other Comprehensive Loss - Summary of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumulative currency translation adjustments	$ (65,656)	$ (77,299)
Unrealized gain on cash flow hedges, net of taxes of $2,967 and $1,207	9,079	2,740
Retirement benefits, net of taxes of ($335) and ($342)	(436)	(498)
Accumulated other comprehensive loss	(57,013)	(75,057)
Unrealized gain / (loss) on cash flow hedges, taxes	2,967	1,207
Retirement benefits, taxes	$ (335)	$ (342)

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Detail) - Recurring - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets
Money market and mutual funds	$ 117,084
Derivative financial instruments	14,167	$ 6,318
Total	131,251	6,318
Liabilities
Derivative financial instruments	2,064	2,258
Total	2,064	2,258
Level 1
Assets
Money market and mutual funds	117,084	0
Total	117,084	0
Level 2
Assets
Money market and mutual funds	0
Derivative financial instruments	14,167	6,318
Total	14,167	6,318
Liabilities
Derivative financial instruments	2,064	2,258
Total	2,064	2,258
Level 3
Assets
Money market and mutual funds	0
Liabilities
Derivative financial instruments	$ 0	$ 0

Derivatives and Hedge Account64

Derivatives and Hedge Accounting - Additional Information (Detail) £ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2017GBP (£)	Dec. 31, 2016USD ($)	Dec. 31, 2016GBP (£)
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative losses which could be reclassified into earnings within the next 12 months	$ 5,938,000
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	240,655,000			$ 218,545,000
Derivatives not Designated as Hedging Instruments | Foreign Currency Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contracts outstanding	$ 91,067,000		£ 8,264	$ 71,318,000	£ 11,153

Derivatives and Hedge Account65

Derivatives and Hedge Accounting - Summary of Fair Value of Foreign Currency Exchange Contracts (Detail) - Foreign Currency Exchange Contracts - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Derivatives Designated as Hedging Instruments | Other current assets
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, asset	$ 7,306	$ 3,211
Derivatives Designated as Hedging Instruments | Other assets
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, asset	6,804	2,994
Derivatives Designated as Hedging Instruments | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, liability	1,368	1,430
Derivatives Designated as Hedging Instruments | Non-current liabilities
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, liability	696	828
Derivatives not Designated as Hedging Instruments | Other current assets
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, asset	$ 57	$ 113

Derivatives and Hedge Account66

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	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Derivatives Designated as Hedging Instruments | Derivatives in Cash Flow Hedging Relationships
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) recognized in AOCL on derivative - Effective portion	$ 8,723	$ 2,437
Foreign exchange gain/(loss) | Derivatives Designated as Hedging Instruments | Derivatives in Cash Flow Hedging Relationships
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) reclassified from AOCL to foreign exchange gain/(loss) - Effective portion	624	57
Gain/(loss) recognized in foreign exchange gain/(loss) - Ineffective portion	0	0
Foreign exchange gain/(loss) | Derivatives not Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) recognized in foreign exchange gain/(loss)	$ 2,622	$ 1,729

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)	Mar. 31, 2016	Dec. 31, 2016USD ($)
Credit Facilities [Line Items]
Other short-term borrowings	$ 10,000		$ 10,000
Revolving Credit Facility
Credit Facilities [Line Items]
Credit facility capacity	100,000
Revolving credit facility	$ 45,000
Credit facility expiration date	Oct. 24, 2019
Other short-term borrowings	$ 10,000
Line of credit interest rate during period (as a percent)	2.50%	1.90%
Unamortized debt issuance costs	$ 248		$ 272
Interest coverage ratio, minimum	3.5
Leverage ratio, minimum	2.5

Capital Structure - Additional

Capital Structure - Additional Information (Detail)	Feb. 28, 2017USD ($)	Mar. 31, 2017USD ($)ClassOfCommonStock$ / sharesshares	Mar. 31, 2016USD ($)$ / sharesshares	Dec. 30, 2014USD ($)
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		62,784	14,548
Withholding tax payments related to the vesting of restricted stock for total consideration		$ 2,913,000	$ 652,000
Weighted average purchase price per share prior to the vesting date (in dollars per share) | $ / shares		$ 46.39	$ 44.83
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)		2,015
Stock repurchase program, period end (year)		2,017
Common stock shares purchased under the repurchase program (in shares) | shares		193,962	138,638
Common stock aggregate purchase price including commissions		$ 9,000,000	$ 6,202,000
Common stock average purchase price per share (in dollars per share) | $ / shares		$ 46.40	$ 44.74
2017 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock authorized by board of directors up to	$ 100,000,000
Stock repurchase program, period start (year)	2,017
Stock repurchase program, period end (year)	2,019
Authorized increase in repurchase amount, 2018	$ 40,000,000
Authorized increase in repurchase amount, 2019	40,000,000
Minimum | 2017 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Authorized increase in repurchase amount	20,000,000
Maximum | 2017 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Authorized increase in repurchase amount	$ 40,000,000

Employee Benefit Plans - Net Gr

Employee Benefit Plans - Net Gratuity Cost (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 484	$ 400
Interest cost	162	149
Expected return on plan assets	(107)	(104)
Amortization of Actuarial loss	69	22
Net gratuity cost	$ 608	$ 467

Employee Benefit Plans - Change

Employee Benefit Plans - Change in Plan Assets (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at January 1, 2017	$ 5,640
Actual return	88
Benefits paid	(194)
Effect of exchange rate changes	266
Plan assets at March 31, 2017	$ 5,800

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Expected return on plan assets (as a percent)	8.00%
Discretionary contributions towards 401(k) Plan, Maximum (as a percent)	4.00%	3.00%
Discretionary contributions to various defined contribution plans	$ 1,068	$ 932
Contributions to various defined contribution plans	$ 1,713	$ 1,466

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments under Capital Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Leases [Abstract]
2,018	$ 269
2,019	174
2,020	114
2,021	43
Total minimum lease payments	600
Less: amount representing interest	99
Present value of minimum lease payments	501
Less: current portion	216	$ 232
Long term capital lease obligation	$ 285	$ 300

Leases - Future Minimum Lease73

Leases - Future Minimum Lease Payments (Details) $ in Thousands	Mar. 31, 2017USD ($)
Leases [Abstract]
2,018	$ 10,218
2,019	8,853
2,020	5,628
2,021	3,743
2,022	1,540
2023 and thereafter	915
Total operating lease payments	$ 30,897

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Leases [Abstract]
Rent expense under both cancelable and non-cancelable operating leases	$ 5,667	$ 5,148
Deferred rent	$ 8,441		$ 7,915

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 3,560	$ 5,895
Effective tax rates (as a percent)	17.50%	29.90%
Employee service share-based compensation, tax benefit realized from exercise of stock options	$ 2,057
Unrecognized tax benefits	3,165		$ 3,087
Recognized interest and penalties	51	$ 50
Accrued interest on unrecognized tax benefits	$ 1,667		$ 1,553

Income Taxes - Summary of Activ

Income Taxes - Summary of Activity Related to Gross Unrecognized Tax Benefits (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance as of January 1, 2017	$ 3,087
Increases related to prior year tax positions	0
Decreases related to prior year tax positions	0
Increases related to current year tax positions	0
Decreases related to current year tax positions	0
Effect of exchange rate changes	78
Balance as of March 31, 2017	$ 3,165

Stock Based Compensation - Cost

Stock Based Compensation - Costs Related to Company's Stock-Based Compensation Plan (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses	$ 5,956	$ 5,809
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses	1,210	1,265
General and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses	2,596	2,372
Selling and marketing expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expenses	$ 2,150	$ 2,172

Stock Based Compensation - Co78

Stock Based Compensation - Costs Related to Company's Stock-Based Compensation Plan Additional Information (Detail)	Mar. 31, 2017shares
2015 Stock Options Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	1,414,544

Stock Based Compensation - Stoc

Stock Based Compensation - Stock Based Compensation Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Options, Granted (in shares)	0	0
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Options, Outstanding, at December 31, 2016 (in shares)	811,902
Number of Options, Granted (in shares)	0
Number of Options, Exercised (in shares)	(7,970)
Number of Options, Forfeited (in shares)	0
Number of Options, Outstanding, at March 31, 2017 (in shares)	803,932		811,902
Number of Options, Vested and exercisable at March 31, 2017 (in shares)	803,932
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted-Average Exercise Price, Outstanding, at December 31, 2016 (in dollars per share)	$ 16.31
Weighted-Average Exercise Price, Granted (in dollars per share)	0
Weighted-Average Exercise Price, Exercised (in dollars per share)	23.99
Weighted-Average Exercise Price, Forfeited (in dollars per share)	0
Weighted-Average Exercise Price, Outstanding, at March 31, 2017 (in dollars per share)	16.23		$ 16.31
Weighted Average Exercise Price, Vested and exercisable at March 31, 2017 (in dollars per share)	$ 16.23
Aggregate Intrinsic Value, Outstanding	$ 25,031		$ 27,718
Weighted-Average Remaining Contractual Life (in years)	2 years 8 months 12 days		2 years 11 months 15 days
Aggregate Intrinsic Value, Vested and exercisable at March 31, 2017	$ 25,031
Weighted-Average Remaining Contractual Life, Vested and exercisable at March 31, 2017 (in years)	2 years 8 months 12 days

Stock Based Compensation - St80

Stock Based Compensation - Stock Options Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, granted (in shares)	0	0
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, unvested options	$ 0
Number of options, granted (in shares)	0
Total grant date fair value of option vested in period	$ 0	$ 706

Stock Based Compensation - Rest

Stock Based Compensation - Restricted Stock Activity Under Company's Stock Plans (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number, Outstanding, at December 31, 2016 (in shares)	246,940
Number, Granted (in shares)	0
Number, Vested (in shares)	(24,426)
Number, Forfeited (in shares)	0
Number, Outstanding, at March 31, 2017 (in shares)	222,514
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, at December 31, 2016 (in dollars per share)	$ 42.42
Weighted-Average Fair Value, Granted (in dollars per share)	0
Weighted-Average Fair Value, Vested (in dollars per share)	35.91
Weighted-Average Fair Value, Forfeited (in dollars per share)	0
Weighted-Average Fair Value, Outstanding, at March 31, 2017 (in dollars per share)	$ 43.13
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number, Outstanding, at December 31, 2016 (in shares)	1,256,288
Number, Granted (in shares)	372,019
Number, Vested (in shares)	(371,374)
Number, Forfeited (in shares)	(13,890)
Number, Outstanding, at March 31, 2017 (in shares)	1,243,043
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, at December 31, 2016 (in dollars per share)	$ 37.38
Weighted-Average Fair Value, Granted (in dollars per share)	47.71
Weighted-Average Fair Value, Vested (in dollars per share)	34.56
Weighted-Average Fair Value, Forfeited (in dollars per share)	41.66
Weighted-Average Fair Value, Outstanding, at March 31, 2017 (in dollars per share)	$ 41.27
Restricted stock units vested (in shares)	138,328	135,054

Stock Based Compensation - Re82

Stock Based Compensation - Restricted Stock Additional Information (Details) - Restricted Stock and Restricted Stock Units $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 50,650
Cost not yet recognized, period for recognition (in years)	3 years 26 days

Stock Based Compensation - Perf

Stock Based Compensation - Performance Restricted Stock Activity (Details)	3 Months Ended
	Mar. 31, 2017$ / sharesshares
Revenue Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number, Outstanding, at December 31, 2016 (in shares) | shares	115,174
Number, Granted (in shares) | shares	61,123
Number, Vested (in shares) | shares	0
Number, Forfeited (in shares) | shares	0
Number, Outstanding, at March 31, 2017 (in shares) | shares	176,297
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, at December 31, 2016 (in dollars per share) | $ / shares	$ 41.70
Weighted-Average Fair Value, Granted (in dollars per share) | $ / shares	47.73
Weighted-Average Fair Value, Vested (in dollars per share) | $ / shares	0
Weighted-Average Fair Value, Forfeited (in dollars per share) | $ / shares	0
Weighted-Average Fair Value, Outstanding, at March 31, 2017 (in dollars per share) | $ / shares	$ 43.79
Market Condition Based PRSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number, Outstanding, at December 31, 2016 (in shares) | shares	215,171
Number, Granted (in shares) | shares	61,111
Number, Vested (in shares) | shares	0
Number, Forfeited (in shares) | shares	0
Number, Outstanding, at March 31, 2017 (in shares) | shares	276,282
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, at December 31, 2016 (in dollars per share) | $ / shares	$ 47.42
Weighted-Average Fair Value, Granted (in dollars per share) | $ / shares	54.10
Weighted-Average Fair Value, Vested (in dollars per share) | $ / shares	0
Weighted-Average Fair Value, Forfeited (in dollars per share) | $ / shares	0
Weighted-Average Fair Value, Outstanding, at March 31, 2017 (in dollars per share) | $ / shares	$ 48.90

Stock Based Compensation - Pe84

Stock Based Compensation - Performance Based Stock Awards Additional Information (Details) - Performance Based Stock Awards $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 12,365
Cost not yet recognized, period for recognition (in years)	2 years 1 month 18 days

Related Party Disclosures - (De

Related Party Disclosures - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Related Party Transactions [Abstract]
Revenue from related party	$ 477	$ 0
Accounts receivable from related party	$ 295		$ 0

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Purchase commitments, net of advances	$ 13,534
Export-oriented units established (as a percent)	100.00%
Transfer pricing issues starting period (year)	2,003
Transfer pricing issues ending period (year)	2,014
Permanent establishment issues starting period (year)	2,003
Permanent establishment issues ending period (year)	2,007
Aggregate disputed amount amount related to transfer pricing and permanent establishment	$ 17,906	$ 17,963
Total bank guarantees and deposits in respect of contingencies	8,512	8,640
Amounts paid as deposits in respect of contingencies	6,469	6,690
Bank guarantee issued	$ 2,043	$ 1,950