ExlService (EXLS) 10-Q 30 Oct 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 27, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'EXLS	'
Entity Registrant Name	'ExlService Holdings, Inc.	'
Entity Central Index Key	'0001297989	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	32,846,021

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$161,428	$148,065
Short-term investments	6,561	5,987
Restricted cash	1,082	423
Accounts receivable, net	75,685	76,121
Prepaid expenses	4,126	5,168
Deferred tax assets, net	4,691	6,958
Advance income tax, net	7,817	2,024
Other current assets	11,694	7,881
Total current assets	273,084	252,627
Fixed assets, net	45,307	34,564
Restricted cash	3,263	3,568
Deferred tax assets, net	11,017	12,254
Intangible assets, net	30,545	34,115
Goodwill	112,203	107,407
Other assets	23,139	18,897
Total assets	498,558	463,432
Current liabilities:	'	'
Accounts payable	3,343	4,714
Deferred revenue	8,039	8,618
Accrued employee cost	28,044	29,405
Accrued expenses and other current liabilities	33,615	32,219
Current portion of capital lease obligations	1,022	1,119
Total current liabilities	74,063	76,075
Capital lease obligations, less current portion	850	1,371
Non-current liabilities	14,530	19,812
Total liabilities	89,443	97,258
Commitments and contingencies (See Note 15)	'	'
Preferred stock, $0.001 par value; 15,000,000 shares authorized, none issued	'	'
Stockholders' equity:	'	'
Common stock, $0.001 par value; 100,000,000 shares authorized, 34,122,806 shares issued and 32,777,971 shares outstanding as of September 30, 2014 and 33,342,312 shares issued and 32,172,183 shares outstanding as of December 31, 2013	34	33
Additional paid-in-capital	228,009	214,522
Retained earnings	261,964	236,979
Accumulated other comprehensive loss	-52,928	-60,718
Total stockholders' equity including shares held in treasury	437,079	390,816
Less: 1,297,885 shares as of September 30, 2014 and 1,170,129 shares as of December 31, 2013, held in treasury, at cost	-27,964	-24,642
Total stockholders' equity	409,115	366,174
Total liabilities and stockholders' equity	$498,558	$463,432

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]	'	'
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	15,000,000	15,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	34,122,806	33,342,312
Common stock, shares outstanding	32,777,971	32,172,183
Treasury stock, shares	1,297,885	1,170,129

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Revenues	$122,457	$122,315	$363,992	$354,329
Cost of revenues (exclusive of depreciation and amortization)	84,983	72,049	241,164	218,892
Gross profit	37,474	50,266	122,828	135,437
Operating expenses:	'	'	'	'
General and administrative expenses	15,952	15,791	46,992	44,265
Selling and marketing expenses	9,117	8,993	28,812	27,884
Depreciation and amortization	7,014	5,969	20,049	18,843
Total operating expenses	32,083	30,753	95,853	90,992
Income from operations	5,391	19,513	26,975	44,445
Other income/(expense) :	'	'	'	'
Foreign exchange income/(loss)	642	-2,508	-328	-3,126
Interest and other income, net	1,044	465	2,861	1,761
Income before income taxes	7,077	17,470	29,508	43,080
Income tax provision	1,002	4,230	4,523	10,842
Net income	$6,075	$13,240	$24,985	$32,238
Earnings per share:	'	'	'	'
Basic	$0.18	$0.40	$0.76	$0.98
Diluted	$0.18	$0.39	$0.74	$0.95
Weighted-average number of shares used in computing earnings per share:	'	'	'	'
Basic	32,890,475	32,907,281	32,743,384	32,737,267
Diluted	33,676,665	33,955,445	33,594,304	33,859,525

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income/(Loss) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'		'		'		'
Net income	$6,075		$13,240		$24,985		$32,238
Other comprehensive income/(loss):	'		'		'		'
Unrealized income/(loss) on effective cash flow hedges, net of taxes ($758), ($1,359), $1,428 and ($3,048), respectively	-2,844		-4,851		4,522		-12,138
Foreign currency translation adjustment	-6,206		-7,588		-1,394		-21,194
Reclassification adjustments	'		'		'		'
Realized loss on cash flow hedges, net of taxes $312, $422, $1,293 and $1,211, respectively	1,106	[1]	910	[1]	4,584	[1]	2,619	[1]
Retirement benefits, net of taxes $6, $7, $21 and $24, respectively	23	[2]	25	[2]	78	[2]	82	[2]
Total other comprehensive income/(loss):	-7,921		-11,504		7,790		-30,631
Total comprehensive income/(loss):	($1,846)		$1,736		$32,775		$1,607
[1]	These are reclassified to net income and are included in the foreign exchange gain/(loss) in the unaudited consolidated statements of income. See Note 7 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 10 to the unaudited consolidated financial statements.

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income/(Loss) (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Taxes on unrealized income/(loss) on cash flow hedges	($758)	($1,359)	$1,428	($3,048)
Taxes on realized loss on cash flow hedges	312	422	1,293	1,211
Retirement benefits, taxes	$6	$7	$21	$24

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flow (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net income	$24,985	$32,238
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	20,049	18,843
Stock-based compensation expense	8,518	9,472
Amortization of deferred financing costs	53	114
Unrealized foreign exchange loss/(gain)	917	-7,792
Deferred income taxes	388	1,829
Gain on sale of fixed assets	-88	'
Loss on sale of business unit	'	190
Non-controlling interest	'	2
Change in operating assets and liabilities:	'	'
Restricted cash	-368	-68
Accounts receivable	839	-1,459
Prepaid expenses and other current assets	-1,891	-3,962
Accounts payable	-790	-1,163
Deferred revenue	-599	-2,521
Accrued employee cost	-2,598	-3,343
Accrued expenses and other liabilities	2,849	-1,853
Advance income tax, net	-5,504	2,474
Other assets	-2,455	1,229
Net cash provided by operating activities	44,305	44,230
Cash flows from investing activities:	'	'
Purchase of fixed assets	-23,762	-11,735
Business acquisition (net of cash acquired)	-6,244	-1,183
Purchase of short-term investments	-7,601	-1,692
Proceeds from redemption of short-term investments	6,986	1,016
Net cash used for investing activities	-30,621	-13,594
Cash flows from financing activities:	'	'
Principal payments on capital lease obligations	-807	-1,230
Payment for purchase of non-controlling interest	'	-27
Acquisition of treasury stock	-3,322	-389
Proceeds from exercise of stock options	4,970	4,624
Net cash provided by financing activities	841	2,978
Effect of exchange rate changes on cash and cash equivalents	-1,162	-4,258
Net increase in cash and cash equivalents	13,363	29,356
Cash and cash equivalents, beginning of period	148,065	103,037
Cash and cash equivalents, end of period	$161,428	$132,393

Organization_and_Basis_of_Pres

Organization and Basis of Presentation	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Organization and Basis of Presentation	'
	1. Organization and Basis of Presentation
	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”), is a leading provider of business process solutions, utilizing operations management, analytics and technology. The Company’s clients are located principally in the U.S. and the U.K.
	Basis of Presentation
	The unaudited interim consolidated financial statements have been prepared in accordance with U.S. 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, 2013.
	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.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	2. Summary of Significant Accounting Policies
	Principles of Consolidation
	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.
	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, 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, stock-based compensation expense, depreciation and amortization periods, purchase price allocation, recoverability of long-term assets including goodwill and intangibles, and estimates to complete the fixed price contracts.
	Revenue Recognition
	On November 1, 2013, the Company received a notice of termination from The Travelers Indemnity Company (“Travelers”) under the Professional Services Agreement, dated as of March 7, 2006, between the Company and Travelers (as amended from time to time, the “Services Agreement”), and is required to provide transition services for a period of up to eighteen months, including reimbursing Travelers for certain of their transition related expenses. The Company recognized $9,626 and $17,815, respectively, of such reimbursements as a reduction of revenues during the three and nine months ended September 30, 2014 in accordance with Accounting Standards Codification (ASC) topic 605-50-45, “Revenue Recognition.” No such payments were made during the three and nine months ended September 30, 2013 (refer to Item 2 – Management’s Discussion and Analysis of Financial Condition and Results of Operations for further details).
	Software Development Costs
	Costs incurred for developing software or enhancements to the existing software products to be sold are capitalized, including the salaries and benefits of employees that are directly involved in the installation and development, once technological feasibility has been established upon completion of a detailed design program or, in its absence, completion of a working model. The capitalized costs are amortized on a straight-line basis over the estimated useful life. Costs associated with preliminary project stage activities, training, maintenance and all post-implementation stage activities are expensed as incurred.
	Recent Accounting Pronouncements
	In March 2013, the Financial Accounting Standards Board (“the FASB”) issued Accounting Standards Update (“ASU”) No. 2013-05, “Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity” (“ASU 2013-05”). ASU 2013-05 applies to the release of the currency translation adjustment into net income when a parent either sells a part of all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. ASU 2013-05 became effective from January 1, 2014 and the new guidance did not have any material impact on the Company’s unaudited consolidated financial statements.
	In July 2013, the FASB issued ASU No. 2013-11, “Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” (“ASU 2013-11”). The provisions of the rule require an unrecognized tax benefit to be presented as a reduction to a deferred tax asset in the financial statements for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward except in circumstances when the carryforward or tax loss is not available at the reporting date under the tax laws of the applicable jurisdiction to settle any additional income taxes or the tax law does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purposes. When those circumstances exist, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. ASU No. 2013-11 became effective from January 1, 2014 and the new guidance did not have any material impact on the Company’s unaudited consolidated financial statements.
	In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”). The new standard is effective for reporting periods beginning after December 15, 2016 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 2017 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 currently evaluating the impact of adoption and the implementation approach to be used.
	In June 2014, the FASB issued ASU No. 2014-12, “Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period” (“ASU 2014-12”). The amendments in ASU 2014-12 require that a performance target in a share based payment that affects vesting and that could be achieved after the requisite service period should be accounted for as a performance condition. The amendments in ASU 2014-12 are effective for annual periods beginning after December 15, 2015 and interim periods within those annual periods with early adoption permitted. Entities may apply the amendments in ASU 2014-12 either: (a) prospectively to all awards granted or modified after the effective date; or (b) modified retrospectively to all awards with performance targets that are outstanding on or after the beginning of the first annual period presented as of the adoption date. ASU 2014-12 is not applicable to the Company’s current stock based compensation plan and it does not expect this guidance to have any impact on the consolidated financial statements.
	In August 2014, the FASB issued ASU No. 2014-15, “Presentation of Financial Statements (Subtopic 205-40), Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern” (“ASU 2014-15”). ASU 2014-15 requires management to evaluate whether there are conditions and events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the financial statements are issued and, if so, disclose that fact. Such evaluation is to be done for both annual and interim reporting periods, if applicable. Management is also required to evaluate and disclose whether its plans alleviate that doubt. ASU 2014-15 will become effective from January 1, 2017 and the Company is currently evaluating the impact of adopting this guidance.
	Accrued expenses and other current liabilities
	Accrued expenses and other current liabilities consist of the following:
		September 30,		December 31,
		2014		2013
	Accrued expenses	$	21,285	$	20,607
	Derivative instruments		2,858		7,689
	Other current liabilities		9,472		3,923
	Accrued expenses and other current liabilities	$	33,615	$	32,219
	Non-current liabilities
	Non-current liabilities consist of the following:
		September 30,		December 31,
		2014		2013
	Derivative instruments	$	1,384	$	5,606
	Unrecognized tax benefits		2,822		4,776
	Deferred rent		5,936		4,973
	Retirement benefits		1,680		3,543
	Other non-current liabilities		2,708		914
	Non-current liabilities	$	14,530	$	19,812

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	3. 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 September 30,				Nine months ended September 30,
		2014		2013		2014		2013
	Numerators:
	Net income	$	6,075	$	13,240	$	24,985	$	32,238
	Denominators:
	Basic weighted average common shares outstanding		32,890,475		32,907,281		32,743,384		32,737,267
	Dilutive effect of share based awards		786,190		1,048,164		850,920		1,122,258
	Diluted weighted average common shares outstanding		33,676,665		33,955,445		33,594,304		33,859,525
	Earnings per share:
	Basic	$	0.18	$	0.4	$	0.76	$	0.98
	Diluted	$	0.18	$	0.39	$	0.74	$	0.95
	Weighted average common shares considered anti-dilutive in computing diluted earnings per share		43,950		219,189		143,096		242,269

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	4. Segment Information
	The Company provides various types of business process solutions utilizing operations management, analytics and technology. These services are provided in an integrated manner to clients in various industries. The chief operating decision maker (the “CODM”) generally reviews financial information at the consolidated statement of income level disaggregated by our two segments (Outsourcing Services and Transformation Services), but does not review any information except for revenues and cost of revenues for these individual segments. Therefore, the Company does not allocate or evaluate operating expenses, interest expense or income, capital expenditures, and income taxes to its operating segments. Consequently, it is not practical to show assets, capital expenditures, depreciation or amortization by segment. The Company’s recent acquisition of Blue Slate Ventures, LLC (“Blue Slate”) is classified within the transformation services segment.
	Revenues and cost of revenues for each of the three months ended September 30, 2014 and 2013 for the Company’s outsourcing services and transformation services segments, respectively, are as follows:
		Three months ended September 30, 2014						Three months ended September 30, 2013
		Outsourcing		Transformation		Total		Outsourcing		Transformation		Total
		Services		Services				Services		Services
	Revenues	$	91,155	$	31,302	$	122,457	$	99,672	$	22,643	$	122,315
	Cost of revenues (exclusive of depreciation and amortization)		62,870		22,113		84,983		56,531		15,518		72,049
	Gross profit	$	28,285	$	9,189	$	37,474	$	43,141	$	7,125	$	50,266
	Operating expenses						32,083						30,753
	Other income/(expense)						1,686						(2,043	)
	Income tax provision						1,002						4,230
	Net income					$	6,075					$	13,240
	Revenues and cost of revenues for each of the nine months ended September 30, 2014 and 2013 for the Company’s outsourcing services and transformation services segments, respectively, are as follows:
		Nine months ended September 30, 2014						Nine months ended September 30, 2013
		Outsourcing		Transformation				Outsourcing		Transformation
		Services		Services		Total		Services		Services		Total
	Revenues	$	285,560	$	78,432	$	363,992	$	294,573	$	59,756	$	354,329
	Cost of revenues (exclusive of depreciation and amortization)		184,263		56,901		241,164		175,490		43,402		218,892
	Gross profit	$	101,297	$	21,531	$	122,828	$	119,083	$	16,354	$	135,437
	Operating expenses						95,853						90,992
	Other income/(expense)						2,533						(1,365	)
	Income tax provision						4,523						10,842
	Net income					$	24,985					$	32,238

Business_Combinations_Goodwill

Business Combinations, Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Business Combinations, Goodwill and Intangible Assets	'
	5. Business Combinations, Goodwill and Intangible Assets
	On July 1, 2014, the Company entered into a membership interest purchase agreement (the “Agreement”) with Blue Slate, a provider of Business Process Management and Technology Solutions that specializes in transforming operations through business process automation, use of innovative technologies, data integration and analytics. Pursuant to the Agreement, the Company has purchased all of the membership interests of Blue Slate Solutions, LLC from Blue Slate for a cash consideration of $6,986, including working capital adjustments of $751. The Company has also issued 46,950 restricted shares of common stock with an aggregate fair value of $1,375 to certain key members of Blue Slate, each of whom have accepted employment positions with the Company upon consummation of the combination.
	Blue Slate’s approach bolsters the Company’s strategy of embedding process automation and operational analytics into client offerings. As the Company pursues this approach through Business EXLerator Framework, Blue Slate brings the ability to work directly on clients’ core, mission-critical applications inside their IT environments to transform their business processes. This strengthens the Company’s position with regard to IT services providers that have strong technology foundations and enriches the Company’s value proposition to clients in addition to using the Company’s capabilities to deliver greater impact for its client base. Accordingly, the Company paid a premium for the acquisition which is being reflected in the goodwill recognized from the purchase price allocation of the total consideration paid by the Company.
	The Company’s preliminary purchase price allocation for the acquisition is as follows:
			Amount
			(In thousands)
	Net tangible assets		$	1,313
	Identifiable intangible assets:
	Customer relationships			575
	Non-compete agreement			48
	Trade names and trademarks			267
	Goodwill			4,783
	Total purchase price*		$	6,986
	*	Includes $750 deposited in escrow accounts in connection with the acquisition.
	The customer relationships, non-compete agreements and trade names and trademarks intangibles from the Blue Slate acquisition are being amortized over a useful life of five years, four years and three years, respectively.
	During the nine months ended September 30, 2014 the company recognized $125 of acquisition related costs. Such amounts are included under general and administrative expenses in the unaudited consolidated statements of income.
	The amount of goodwill recognized from the Blue Slate acquisition is deductible for tax purposes.
	Goodwill
	The following table sets forth details of the Company’s goodwill balance as of September 30, 2014:
			Outsourcing			Transformation
			Services			Services			Total
	Balance at January 1, 2013		$	94,163		$	16,785		$	110,948
	Currency translation adjustments			(3,291	)		—			(3,291	)
	Allocation on sale of a business unit (1)			(250	)		—			(250	)
	Balance at December 31, 2013		$	90,622		$	16,785		$	107,407
	Goodwill arising from Blue Slate acquisition			—			4,783			4,783
	Currency translation adjustments			13			—			13
	Balance at September 30, 2014		$	90,635		$	21,568		$	112,203
	-1	Relates to the sale of a business unit (acquired with the acquisition of Business Process Outsourcing Inc.) during the year ended December 31, 2013. The net loss recognized from the sale of this business unit is $190 and is included under “other income/ (expense)” in the consolidated statements of income for the year ended December 31, 2013 included in the Company’s annual report on Form 10-K for the year ended December 31, 2013.
	Intangible Assets
	Information regarding the Company’s intangible assets is as follows:
			As of September 30, 2014
			Gross			Accumulated			Net Carrying
			Carrying			Amortization			Amount
			Amount
	Customer relationships		$	39,189		$	(15,505	)	$	23,684
	Leasehold benefits			2,988			(1,668	)		1,320
	Developed technology			6,013			(2,036	)		3,977
	Non-compete agreements			1,365			(1,320	)		45
	Trade names and trademarks			3,590			(2,071	)		1,519
			$	53,145		$	(22,600	)	$	30,545
			As of December 31, 2013
			Gross			Accumulated			Net Carrying
			Carrying			Amortization			Amount
			Amount
	Customer relationships		$	38,614		$	(12,201	)	$	26,413
	Leasehold benefits			2,986			(1,455	)		1,531
	Developed technology			6,013			(1,458	)		4,555
	Non-compete agreements			1,316			(1,316	)		—
	Trade names and trademarks			3,322			(1,706	)		1,616
			$	52,251		$	(18,136	)	$	34,115
	Amortization expense for the three months ended September 30, 2014 and 2013 was $1,441 and $1,534, respectively. Amortization expense for the nine months ended September 30, 2014 and 2013 was $4,467 and $4,764, respectively. The weighted average life of intangible assets was 8.9 years for customer relationships, 8.0 years for leasehold benefits, 8.0 years for developed technology, 4.0 years for non-compete agreements and 4.4 years for trade names and trademarks excluding indefinite life trade names and trademarks. The Company had $900 of indefinite lived trade names and trademarks as of September 30, 2014 and December 31, 2013.
	Estimated amortization of intangible assets during the year ending September 30,
	2015		$	5,760
	2016		$	5,760
	2017		$	5,729
	2018		$	5,543
	2019		$	5,405

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	6. 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 on a recurring basis as of September 30, 2014 and December 31, 2013. The table excludes short-term investments, accounts receivable, accounts payable and accrued expenses for which fair values approximate their carrying amounts.
	As of September 30, 2014	Level 1		Level 2		Level 3		Total
	Assets
	Money market and mutual funds	$	114,072	$	—	$	—	$	114,072
	Derivative financial instruments		—		3,634		—		3,634
	Total	$	114,072	$	3,634	$	—	$	117,706
	Liabilities
	Derivative financial instruments	$	—	$	4,327	$	—	$	4,327
	Total	$	—	$	4,327	$	—	$	4,327
	As of December 31, 2013	Level 1		Level 2		Level 3		Total
	Assets
	Money market and mutual funds	$	116,662	$	—	$	—	$	116,662
	Derivative financial instruments		—		957		—		957
	Total	$	116,662	$	957	$	—	$	117,619
	Liabilities
	Derivative financial instruments	$	—	$	13,295	$	—	$	13,295
	Total	$	—	$	13,295	$	—	$	13,295
	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 7 for further details on derivatives and hedge accounting.

Derivatives_and_Hedge_Accounti

Derivatives and Hedge Accounting	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivatives and Hedge Accounting	'
	7. 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 forward foreign exchange contracts that are designated effective and that qualify as cash flow hedges under FASB Accounting Standard Codification (“ASC”) 815, “Derivatives and Hedging” (“ASC 815”). The Company also uses derivatives consisting of foreign currency exchange contracts not designated as hedging instruments under ASC 815 to hedge intercompany balances and other monetary assets or liabilities denominated in currencies other than the functional currencies of various subsidiaries of the Company. 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 the Czech koruna and other local currencies in which it operates.
	The Company had outstanding foreign exchange contracts totaling $302,400 and GBP 11,090 as of September 30, 2014 and $262,085 and GBP 10,973 as of December 31, 2013. The Company estimates that approximately $1,494 of net derivative losses included in accumulated other comprehensive loss (“AOCI”) could be reclassified into earnings within the next twelve months based on exchange rates prevailing as of September 30, 2014. As of September 30, 2014, the maximum outstanding term of derivative instruments that hedge forecasted transactions was forty-five months.
	The Company evaluates the 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 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. No such significant amounts of gains or losses were reclassified from AOCI into earnings during the three and nine months ended September 30, 2014 and 2013.
	The following tables set forth the fair value of the foreign currency exchange contracts and their location on the Company’s unaudited consolidated financial statements:
	Derivatives designated as hedging instruments
		September 30,				December 31,
		2014				2013
	Other current assets:
	Foreign currency exchange contracts	$	1,364			$	437
	Other assets:
	Foreign currency exchange contracts	$	2,270			$	423
	Accrued expenses and other current liabilities:
	Foreign currency exchange contracts	$	2,858			$	7,689
	Other non-current liabilities:
	Foreign currency exchange contracts	$	1,384			$	5,606
	Derivatives not designated as hedging instruments:
		September 30,				December 31,
		2014				2013
	Other current assets:
	Foreign currency exchange contracts					$	97
	Accrued expenses and other current liabilities:
	Foreign currency exchange contracts	$	85
	The following tables set forth the effect of foreign currency exchange contracts on the unaudited consolidated statements of income for the three months ended September 30, 2014 and 2013:
	Derivatives in Cash Flow	Amount of Gain/(Loss)								Location of Gain/(Loss)	Amount of						Location of Gain/(Loss)	Amount of Gain/
	Hedging Relationships	Recognized in AOCI on								Reclassified from	Gain/(Loss) Reclassified						Recognized in Income on	(Loss) Recognized in
		Derivative								AOCI into Income	from AOCI into						Derivative	Income on Derivative
		(Effective Portion)								(Effective Portion)	Income (Effective						(Ineffective Portion and	(Ineffective Portion and
											Portion)						Amount Excluded from	Amount  Excluded from
																	Effectiveness Testing)	Effectiveness Testing)
		2014				2013					2014			2013				2014		2013
	Foreign exchange contracts	$	(3,602	)		$	(6,210	)		Foreign exchange income/(loss)	$	(1,418	)	$	(1,332	)	Foreign exchange income/(loss)	$	—	$	—
	Derivatives not designated as Hedging Instruments	Location of Gain/(Loss)		Amount of Gain/(Loss)
				Recognized in Income on
		Recognized in Income on Derivatives		Derivatives
				2014				2013
	Foreign exchange contracts	Foreign exchange income/(loss)		$	(9	)		$	(2,169	)
	The following tables set forth the effect of foreign currency exchange contracts on the unaudited consolidated statements of income for the nine months ended September 30, 2014 and 2013:
	Derivatives in Cash Flow	Amount of Gain/(Loss)								Location of Gain/(Loss)	Amount of						Location of Gain/(Loss)	Amount of Gain/
	Hedging Relationships	Recognized in AOCI on								Reclassified from	Gain/(Loss) Reclassified						Recognized in Income on	(Loss) Recognized in
		Derivative								AOCI into Income	from AOCI into						Derivative	Income on Derivative
		(Effective Portion)								(Effective Portion)	Income (Effective							(Ineffective Portion and
											Portion)						(Ineffective Portion and	Amount Excluded from
																	Amount Excluded from	Effectiveness Testing)
																	Effectiveness Testing)
		2014				2013					2014			2013				2014		2013
	Foreign exchange contracts	$	5,950			$	(15,186	)		Foreign exchange income/(loss)	$	(5,877	)	$	(3,830	)	Foreign exchange income/(loss)	$	—	$	—
	Derivatives not designated as Hedging Instruments	Location of Gain or (Loss)		Amount of Gain/(Loss)
				Recognized in Income on
		Recognized in Income on Derivatives		Derivatives
				2014				2013
	Foreign exchange contracts	Foreign exchange income/(loss)		$	3,442			$	(4,708	)

Fixed_Assets

Fixed Assets	9 Months Ended
	Sep. 30, 2014
Property, Plant and Equipment [Abstract]	'
Fixed Assets	'
	8. Fixed Assets
	Fixed assets consist of the following:
		September 30,			December 31,
		2014			2013
	Owned Assets:
	Network equipment, computers and software	$	82,246		$	63,428
	Buildings		1,288			1,287
	Land		843			842
	Leasehold improvements		26,785			24,382
	Office furniture and equipment		12,769			11,111
	Motor vehicles		588			507
	Capital work in progress		2,734			715
			127,253			102,272
	Less: Accumulated depreciation and amortization		(83,110	)		(69,242	)
		$	44,143		$	33,030
	Assets under capital leases:
	Network equipment, computers and software	$	—		$	184
	Leasehold improvements		1,955			1,955
	Office furniture and equipment		923			1,079
	Motor vehicles		892			934
			3,770			4,152
	Less: Accumulated depreciation and amortization		(2,606	)		(2,618	)
		$	1,164		$	1,534
	Fixed assets, net	$	45,307		$	34,564
	Depreciation and amortization expense excluding amortization of acquisition-related intangibles for the three months ended September 30, 2014 and 2013 was $5,573 and $4,435, respectively, and $15,582 and $14,079 for the nine months ended September 30, 2014 and 2013, respectively.
	Capital work in progress represents advances paid toward acquisitions of fixed assets and the cost of fixed assets not yet ready to be placed in service.

Capital_Structure

Capital Structure	9 Months Ended
	Sep. 30, 2014
Text Block [Abstract]	'
Capital Structure	'
	9. Capital Structure
	The Company has one class of common stock outstanding.
	During the three months ended September 30, 2014 and 2013, the Company did not acquire any shares of common stock from employees in connection with withholding tax payments related to the vesting of restricted stock.
	During the nine months ended September 30, 2014 and 2013, the Company acquired 18,256 and 13,018 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 $459 and $389. The weighted average purchase price of $25.14 and $29.89, respectively, was the average of the high and low price of the Company’s shares of common stock on the Nasdaq Global Select Market on the trading day prior to the vesting date of the shares of restricted stock. The shares acquired are held as treasury stock.
	During the three months ended September 30, 2014, the Company purchased 109,500 shares of its common stock for an aggregate purchase price of approximately $2,863 including commissions, representing an average purchase price per share of $26.14 as part of the share repurchase program that authorized the purchase of up to an aggregate principal amount of $25,000 of the Company’s outstanding common stock.
	Repurchased shares have been recorded as treasury shares and will be held until the Company’s board of directors designates that these shares be retired or used for other purposes.

Employee_Benefit_Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	10. Employee Benefit Plans
	The Company’s gratuity plans in India and the Philippines provide a lump-sum payment to vested employees upon 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 plans 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.
	Net gratuity cost includes the following components:
			Three months ended September 30,						Nine months ended September 30,
			2014			2013			2014			2013
	Service cost		$	355		$	266		$	1,083		$	867
	Interest cost			125			103			385			339
	Expected return on plan assets			(43	)		(38	)		(130	)		(125	)
	Actuarial loss			29			32			99			106
	Net gratuity cost		$	466		$	363		$	1,437		$	1,187
	The gratuity plans in India are partially funded and are managed and administered by Life Insurance Corporation of India and HDFC Standard Life Insurance Company. These entities 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 31st of each year. The Company earned a return of approximately 9.0% and 9.5% on these gratuity plans for the year ended March 31, 2014 and March 31, 2013, respectively.
	Change in Plan Assets
	Plan assets at January 1, 2014		$	2,156
	Employer contribution			2,534
	Expected return			148
	Benefits paid*			—
	Effect of exchange rate changes			(1	)
	Plan assets at September 30, 2014		$	4,837
	*	Benefit payments were made directly by the Company and not through the plan assets during the three and nine months ended September 30, 2014.
	The Company maintains the Exl Service Inc. 401(k) Plan under Section 401(k) of the Internal Revenue Code of 1986, covering all eligible employees, as defined. The Company may make discretionary contributions of up to a maximum of 3% of employee compensation within certain limits. The Company has made provisions for contributions to the 401(k) Plan amounting to $192 and $370 during the three month periods ended September 30, 2014 and 2013, respectively, and $1,037 and $1,343 during the nine month periods ended September 30, 2014 and 2013, respectively.
	During the three and nine month periods ended September 30, 2014 and 2013, the Company contributed the following amounts to various defined contribution plans on behalf of its employees in India, the Philippines, Romania, Bulgaria, and the Czech Republic:
	Three months ended September 30, 2014		$	1,418
	Three months ended September 30, 2013		$	1,289
	Nine months ended September 30, 2014		$	4,279
	Nine months ended September 30, 2013		$	4,149

Leases

Leases	9 Months Ended
	Sep. 30, 2014
Leases [Abstract]	'
Leases	'
	11. Leases
	The Company finances its use of certain leasehold improvements, furniture, fixtures, office equipment and motor vehicles under various lease arrangements provided by financial institutions. Future minimum lease payments under these capital leases as of September 30, 2014 are as follows:
	Year ending September 30,
	2015	$	1,164
	2016		692
	2017		184
	2018		42
	Total minimum lease payments		2,082
	Less: amount representing interest		210
	Present value of minimum lease payments		1,872
	Less: current portion		1,022
	Long term capital lease obligation	$	850
	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 September 30, 2014 are set forth below:
	Year ending September 30,
	2015	$	9,777
	2016		6,978
	2017		2,409
	2018		1,728
	2019		1,300
	2020 and thereafter		178
		$	22,370
	The operating leases are subject to renewal periodically and have scheduled rent increases. The Company accounts for scheduled rent on a straight-line basis over the non-cancelable lease period determined under ASC 840. Rent expense under both cancelable and non-cancelable operating leases was $4,897 and $4,264 for the three months ended September 30, 2014 and 2013, respectively, and $14,153 and $13,049 for the nine months ended September 30, 2014 and 2013, respectively. Deferred rent as of September 30, 2014 and December 31, 2013 was $6,528 and $5,394, respectively, and is included under “Accrued expenses and other current liabilities” and “Non-current liabilities” in the consolidated balance sheets.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	12. 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 its annual effective tax rate, and if its estimated tax rate changes, the Company makes a cumulative adjustment.
	The Company recorded an income tax expense of $1,002 and $4,230 for the three months ended September 30, 2014 and 2013, respectively. Income tax expense for the nine months ended September 30, 2014 and 2013 was $4,523 and $10,842, respectively. The effective tax rate decreased from 24.2% during the three months ended September 30, 2013 to 14.2% during the three months ended September 30, 2014. The effective tax rate decreased from 25.2% during the nine months ended September 30, 2013 to 15.3% during the nine months ended September 30, 2014, primarily due to the reversal of an unrecognized tax benefit of $2,173 during the quarter ended June 30, 2014 as a result of judicial rulings handed down during the quarter involving unaffiliated companies regarding similar tax matters. In the Company’s judgment, such rulings increased the level of certainty that its position on these tax adjustments proposed by the tax authorities would more likely than not be resolved in favor of the Company. The effective tax rate was further decreased during the nine months ended September 30, 2014 due to lower income in the U.S. due to the reimbursement of disentanglement costs to Travelers under the Services Agreement (refer to Item 2 – “Management’s Discussion and Analysis of Financial Condition and Results of Operations” for further details).
	The following table summarizes the activity related to the gross unrecognized tax benefits from January 1, 2014 through September 30, 2014:
	Balance as of January 1, 2014	$	4,913
	Increases related to prior year tax positions		—
	Decreases related to prior year tax positions		(2,173	)
	Increases related to current year tax positions		—
	Decreases related to current year tax positions		—
	Effect of exchange rate changes		58
	Balance as of September 30, 2014	$	2,798
	The unrecognized tax benefits as of September 30, 2014 of $2,798, if recognized, would impact the effective tax rate.
	During the three months ended September 30, 2014 and 2013, the Company has recognized interest of $54 and $52 respectively, which is included in the income tax provision in the unaudited consolidated statements of income. As of September 30, 2014 and December 31, 2013, the Company has accrued approximately $1,024 and $863, respectively, in interest relating to unrecognized tax benefits.
	The unrecognized tax benefits may increase or decrease in the next twelve months depending on the Company’s tax position.

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	13. 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 September 30,						Nine months ended September 30,
			2014			2013			2014			2013
	Cost of revenue		$	410		$	660		$	1,873		$	2,058
	General and administrative expenses			985			1,142			3,285			3,958
	Selling and marketing expenses			981			1,165			3,360			3,456
	Total		$	2,376		$	2,967		$	8,518		$	9,472
	Stock Options
	The fair value of each stock option granted to employees is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions:
			Nine months ended September 30,
			2014			2013
	Dividend yield			0	%		0	%
	Expected life (years)			5.5			5.5
	Risk free interest rate			1.84	%		0.87	%
	Volatility			35	%		40	%
	The estimated expected term of options granted has been based on historical experience, which is representative of the expected term of the options. Volatility has been calculated based on the volatility of the Company’s common stock and the volatility of stock of comparative companies. The risk-free interest rate that the Company uses in the option valuation model is based on U.S. treasury zero-coupon bonds with a remaining term similar to the expected term of the options.
	The Company does not anticipate paying any cash dividends in the foreseeable future and therefore uses an expected dividend yield of zero in the option valuation model. The Company is required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. The Company uses historical data to estimate pre-vesting option forfeitures and records stock-based compensation expense only for those awards that are expected to vest. All stock-based payment awards are amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods.
	Stock option activity under the Company’s stock plans is shown below:
			Number of			Weighted-			Aggregate			Weighted-
			Options			Average Exercise			Intrinsic			Average
						Price			Value			Remaining
												Contractual Life
												(Years)
	Outstanding at December 31, 2013			1,956,515		$	16.25		$	22,255			5.55
	Granted			9,794			27.62
	Exercised			(324,534	)		15.32
	Forfeited/Expired			(77,750	)		24.73
	Outstanding at September 30, 2014			1,564,025		$	16.09		$	13,210			4.65
	Vested and exercisable at September 30, 2014			1,320,872		$	14.74		$	12,872			4.26
	Available for grant at September 30, 2014			1,380,540
	The unrecognized compensation cost for unvested options as of September 30, 2014 was $1,178 which is expected to be expensed over a weighted average period of 1.13 years. The Company did not issue any stock options during the three months ended September 30, 2014 and 2013. The weighted-average fair value of options granted during the nine months ended September 30, 2014 and 2013 was $9.77 and $10.07, respectively. The total grant date fair value of options vested during the three months ended September 30, 2014 and 2013 was $693 and $541, respectively. The total grant date fair value of options vested during the nine months ended September 30, 2014 and 2013 was $1,917 and $2,865, respectively.
	Restricted Stock and Restricted Stock Units
	Restricted stock and restricted stock units activity under the Company’s stock plans is shown below:
			Restricted Stock						Restricted Stock Units
			Number			Weighted-			Number			Weighted-
						Average Fair						Average Fair
						Value						Value
	Outstanding at December 31, 2013			—		$	—			1,144,442		$	24.95
	Granted			46,950			29.29			498,595			26.23
	Vested			—			—			(417,010	)		21.91
	Forfeited			—			—			(129,430	)		26.27
	Outstanding at September 30, 2014*			46,950		$	29.29			1,096,597		$	26.53
	*	Excludes 120,000 and 112,000 vested restricted stock units as of September 30, 2014 and December 31, 2013, respectively, for which the underlying common stock is yet to be issued.
	As of September 30, 2014, unrecognized compensation cost of $23,720 is expected to be expensed over a weighted average period of 2.57 years.
	Performance Based Stock Awards
	On February 13, 2014, the Compensation Committee of the Board of Directors of the Company approved the program of performance based grant of restricted stock units (“PRSUs”) for executive officers and other specified employees under its existing 2006 Omnibus Award Plan.
	Under this program, the PRSUs will cliff vest at the end of a three-year period based on satisfaction of dual performance criteria: 50% of the PRSUs shall be based on a total revenue performance condition (“PUs”) measured on a cumulative basis over a three-year performance period and the other 50% shall be based on a market condition (“MUs”) that is contingent on meeting or exceeding the total shareholder return relative to a group of peer companies specified under the program, measured over a three-year performance period. In addition, up to one-third of the PUs may be earned based on the Company’s revenue performance in each of 2014 and 2015 against revenue targets in those years. The ultimate amount of PUs that the recipient earns, will be the greater of (x) the PUs earned in 2016 and (y) the sum of the earned PUs in 2014 and 2015. The award recipient may earn up to two hundred percent (200%) of the target based on the actual performance for both kinds of PRSUs.
	The fair value of each PU was determined based on the market price of one common share of the Company on the date of grant, and assumes that performance targets will be achieved. The compensation expense for the PUs is recognized on a straight-line basis over the vesting terms. Over the performance period, the number of shares that will be issued will be adjusted upward or downward based upon the probability of achievement of the performance targets. The ultimate number of shares issued and the related compensation cost recognized as an expense will be based on a comparison of the final performance metrics to the specified targets.
	The grant date fair value for the MUs was determined using a Monte Carlo simulation model and will be expensed on a straight-line basis over the vesting period. All compensation expense related to the MUs will be recognized if the requisite performance period is fulfilled, even if the market condition is not achieved.
	The Monte-Carlo simulation model simulates a range of possible future stock prices and estimates the probabilities of the potential payouts. This model also incorporates the following ranges of assumptions:
		•		The historical volatilities are used over the most recent three-year period for the components of the peer group.
		•		The risk-free interest rate is based on the U.S. Treasury rate assumption commensurate with the three-year performance period.
		•		Since the plan stipulates that the awards are based upon the TSR of the Company and the components of the peer group, it is assumed that the dividends get reinvested in the issuing entity on a continuous basis.
		•		The correlation coefficients are used to model the way in which each entity tends to move in relation to each other are based upon the price data used to calculate the historical volatilities.
	Performance restricted stock unit activity under the Company’s stock plans is shown below:
			Revenue Based PRSU’s						Market Condition Based
									PRSU’s
			Number			Weighted Avg			Number			Weighted
						Fair Value						Avg Fair
												Value
	Outstanding at Dec 31, 2013			—		$	—			—		$	—
	Granted			55,475			25.63			55,475			33.6
Vested			—			—			—			—
Forfeited			(7,750	)		25.63			(7,750	)		33.6
Outstanding at September 30, 2014			47,725		$	25.63			47,725		$	33.6
As of September 30, 2014, unrecognized compensation cost of $2,298 is expected to be expensed over a weighted average period of 2.25 years.

Geographical_Information

Geographical Information	9 Months Ended
	Sep. 30, 2014
Text Block [Abstract]	'
Geographical Information	'
	14. Geographical Information
		Three months ended September 30,				Nine months ended September 30,
		2014		2013		2014		2013
	Revenues
	United States	$	89,337	$	91,995	$	267,638	$	259,769
	United Kingdom		26,060		23,000		74,215		70,186
	Rest of World		7,060		7,320		22,139		24,374
		$	122,457	$	122,315	$	363,992	$	354,329
		September 30,		December 31,
		2014		2013
	Fixed assets, net
	India	$	26,141	$	21,433
	United States		6,853		3,981
	Philippines		11,724		8,409
	Rest of World		589		741
		$	45,307	$	34,564

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	15. Commitments and Contingencies
	Fixed Asset Commitments
	As of September 30, 2014, the Company had committed to spend approximately $6,840 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 under the Software Technology Parks of India (“STPI”) scheme promulgated by the Government of India. These units are exempt from customs, central excise duties, and levies on imported and indigenous capital goods, stores, and spares. The Company has undertaken to pay custom duties, service taxes, levies, and liquidated damages payable, if any, in respect of imported and indigenous capital goods, stores, and spares consumed duty free, in the event that certain terms and conditions are not fulfilled. The Company’s management believes, however, that these units have in the past satisfied and will continue to satisfy the required conditions.
	The Company’s operations centers in the Philippines are registered with the Philippine Economic Zone Authority (“PEZA”). The registration provides the Company with certain fiscal incentives on the import of capital goods and requires Exl Philippines to meet certain performance and investment criteria. The Company’s management believes that these centers have in the past satisfied and will continue to satisfy the required criteria.
	Contingencies
	U.S. and Indian transfer pricing regulations require that any international transaction involving associated enterprises be at an arm’s-length price. Accordingly, the Company determines the appropriate pricing for the international transactions among its associated enterprises on the basis of a detailed functional and economic analysis involving benchmarking against transactions among entities that are not under common control. The tax authorities have jurisdiction to review this arrangement and in the event that they determine that the transfer price applied was not appropriate, the Company may incur increased tax liability, including accrued interest and penalties. The Company is currently involved in disputes with the Indian tax authorities over the application of some of its transfer pricing policies for some of its subsidiaries. Further, the Company and its 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 various years ranging from tax years 2003 to 2010 and its permanent establishment issues ranging from tax years 2003 to 2007 as of September 30, 2014 and December 31, 2013 is $18,015 and $14,742, respectively, of which the Company has already made payments or provided bank guarantees to the extent of $14,970 and $13,797, respectively. Amounts paid as deposits in respect of such assessments aggregating to $12,825 and $11,653 as of September 30, 2014 and December 31, 2013, respectively, are included in “Other assets” and amounts deposited for bank guarantees aggregating to $2,145 and $2,144 as of September 30, 2014 and December 31, 2013, respectively, are included in “Restricted cash” in the non-current assets section of the Company’s consolidated balance sheets as of September 30, 2014 and December 31, 2013.
	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.

Subsequent_Event

Subsequent Event	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Event	'
	16. Subsequent Event
	Acquisition of Overland Holdings, Inc.
	On October 24, 2014, pursuant to an Agreement and Plan of Merger, dated October 24, 2014, by and between ExlService.com, LLC, a Delaware limited liability company and a wholly owned subsidiary of the Company (the “Acquiror”), Heartland Acquisition Sub Corp., a Delaware corporation and a wholly owned subsidiary of the Acquiror (“Merger Sub”), Overland Holdings, Inc., a Delaware corporation (“Overland”), New Mountain Affiliated Investors, L.P., a New York limited partnership, and New Mountain Partners, L.P., a New York limited partnership (the “Plan of Merger”), the Company acquired Overland in a merger transaction. Overland specializes in premium audit services, commercial and residential underwriting surveys and loss control services to the property and casualty insurance industry.
	Under the terms of the Plan of Merger and subject to the conditions set forth therein, Merger Sub merged with and into Overland and Overland survived and became a wholly owned subsidiary of the Acquiror (the “Merger”). The aggregate consideration for all the outstanding capital stock of Overland was $53,000 in cash (the “Merger Consideration”), subject to adjustment based on working capital, Overland’s debt and certain transaction expenses. The Merger Consideration was paid with existing cash on the Company’s balance sheet. A portion of the Merger Consideration otherwise payable in the Merger was placed into escrow as security for post-closing working capital adjustments and the indemnification obligations under the Merger Agreement.
	Credit Agreement
	The Company and certain of its subsidiaries entered into a credit agreement with certain lenders and JPMorgan Chase Bank, N.A., as administrative agent, that became effective as of October 27, 2014 (the “Credit Agreement”). The credit agreement provides for a $50,000 revolving credit facility. The Company has an option to increase the commitments under the credit agreement, subject to certain approvals and conditions as set forth in the credit agreement. The credit agreement also includes a letter of credit subfacility. Borrowings under the credit agreement may be used for working capital and general corporate purposes of the Company and its subsidiaries.
	Depending on the type of borrowing, loans under the Credit Agreement bear interest at a rate equal to the specified prime rate (alternate base rate) or adjusted LIBO rate, plus, in each case, an applicable margin. The applicable margin is tied to the Company’s leverage ratio and ranges from 0.25% to 0.75% per annum with respect to loans (“ABR Loans”) pegged to the specified prime rate, and 1.25% to 1.75% per annum on loans (“Eurodollar Loans”) pegged to the adjusted LIBO rate (such applicable margin, the “Applicable Rate”). The revolving credit commitments under the Credit Agreement are subject to a commitment fee. The commitment fee is also tied to the Company’s leverage ratio, and ranges from 0.20% to 0.30% per annum on the average daily amount by which the aggregate revolving commitments exceed the sum of outstanding revolving loans and letter of credit obligations.
	The Credit Agreement will be guaranteed by the Company’s domestic subsidiaries. The obligations under the Credit Agreement will be secured by all or substantially all of the assets of the Company and its material domestic subsidiaries.
	The Credit Agreement contains customary affirmative and negative covenants (which are in some cases subject to certain exceptions), including, but not limited to, restrictions on the ability to incur additional indebtedness, create liens, make certain investments, make certain dividends and related distributions, enter into, or undertake, certain liquidations, mergers, consolidations or acquisitions and dispose of assets or subsidiaries. In addition, the Credit Agreement requires the Company to maintain a certain interest coverage ratio and a leverage ratio.
	The Credit Agreement contains customary events of default (which are in some cases subject to certain exceptions, thresholds, notice requirements and grace periods), including, but not limited to, nonpayment of principal or interest, breaches of representations and warranties, failure to perform or observe covenants, cross-defaults with certain other agreements or indebtedness, final judgments or orders, certain change of control events and certain bankruptcy-related events or proceedings.

Organization_and_Basis_of_Pres1

Organization and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The unaudited interim consolidated financial statements have been prepared in accordance with U.S. 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, 2013.
	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.
Principles of Consolidation	'
	Principles of Consolidation
	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.
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, 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, stock-based compensation expense, depreciation and amortization periods, purchase price allocation, recoverability of long-term assets including goodwill and intangibles, and estimates to complete the fixed price contracts.
Revenue Recognition	'
	Revenue Recognition
	On November 1, 2013, the Company received a notice of termination from The Travelers Indemnity Company (“Travelers”) under the Professional Services Agreement, dated as of March 7, 2006, between the Company and Travelers (as amended from time to time, the “Services Agreement”), and is required to provide transition services for a period of up to eighteen months, including reimbursing Travelers for certain of their transition related expenses. The Company recognized $9,626 and $17,815, respectively, of such reimbursements as a reduction of revenues during the three and nine months ended September 30, 2014 in accordance with Accounting Standards Codification (ASC) topic 605-50-45, “Revenue Recognition.” No such payments were made during the three and nine months ended September 30, 2013 (refer to Item 2 – Management’s Discussion and Analysis of Financial Condition and Results of Operations for further details).
Software Development Costs	'
	Software Development Costs
	Costs incurred for developing software or enhancements to the existing software products to be sold are capitalized, including the salaries and benefits of employees that are directly involved in the installation and development, once technological feasibility has been established upon completion of a detailed design program or, in its absence, completion of a working model. The capitalized costs are amortized on a straight-line basis over the estimated useful life. Costs associated with preliminary project stage activities, training, maintenance and all post-implementation stage activities are expensed as incurred.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In March 2013, the Financial Accounting Standards Board (“the FASB”) issued Accounting Standards Update (“ASU”) No. 2013-05, “Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity” (“ASU 2013-05”). ASU 2013-05 applies to the release of the currency translation adjustment into net income when a parent either sells a part of all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. ASU 2013-05 became effective from January 1, 2014 and the new guidance did not have any material impact on the Company’s unaudited consolidated financial statements.
	In July 2013, the FASB issued ASU No. 2013-11, “Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” (“ASU 2013-11”). The provisions of the rule require an unrecognized tax benefit to be presented as a reduction to a deferred tax asset in the financial statements for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward except in circumstances when the carryforward or tax loss is not available at the reporting date under the tax laws of the applicable jurisdiction to settle any additional income taxes or the tax law does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purposes. When those circumstances exist, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. ASU No. 2013-11 became effective from January 1, 2014 and the new guidance did not have any material impact on the Company’s unaudited consolidated financial statements.
	In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”). The new standard is effective for reporting periods beginning after December 15, 2016 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 2017 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 currently evaluating the impact of adoption and the implementation approach to be used.
	In June 2014, the FASB issued ASU No. 2014-12, “Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period” (“ASU 2014-12”). The amendments in ASU 2014-12 require that a performance target in a share based payment that affects vesting and that could be achieved after the requisite service period should be accounted for as a performance condition. The amendments in ASU 2014-12 are effective for annual periods beginning after December 15, 2015 and interim periods within those annual periods with early adoption permitted. Entities may apply the amendments in ASU 2014-12 either: (a) prospectively to all awards granted or modified after the effective date; or (b) modified retrospectively to all awards with performance targets that are outstanding on or after the beginning of the first annual period presented as of the adoption date. ASU 2014-12 is not applicable to the Company’s current stock based compensation plan and it does not expect this guidance to have any impact on the consolidated financial statements.
	In August 2014, the FASB issued ASU No. 2014-15, “Presentation of Financial Statements (Subtopic 205-40), Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern” (“ASU 2014-15”). ASU 2014-15 requires management to evaluate whether there are conditions and events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the financial statements are issued and, if so, disclose that fact. Such evaluation is to be done for both annual and interim reporting periods, if applicable. Management is also required to evaluate and disclose whether its plans alleviate that doubt. ASU 2014-15 will become effective from January 1, 2017 and the Company is currently evaluating the impact of adopting this guidance.
Business Combinations, Goodwill and Intangible Assets	'
	On July 1, 2014, the Company entered into a membership interest purchase agreement (the “Agreement”) with Blue Slate, a provider of Business Process Management and Technology Solutions that specializes in transforming operations through business process automation, use of innovative technologies, data integration and analytics. Pursuant to the Agreement, the Company has purchased all of the membership interests of Blue Slate Solutions, LLC from Blue Slate for a cash consideration of $6,986, including working capital adjustments of $751. The Company has also issued 46,950 restricted shares of common stock with an aggregate fair value of $1,375 to certain key members of Blue Slate, each of whom have accepted employment positions with the Company upon consummation of the combination.
	Blue Slate’s approach bolsters the Company’s strategy of embedding process automation and operational analytics into client offerings. As the Company pursues this approach through Business EXLerator Framework, Blue Slate brings the ability to work directly on clients’ core, mission-critical applications inside their IT environments to transform their business processes. This strengthens the Company’s position with regard to IT services providers that have strong technology foundations and enriches the Company’s value proposition to clients in addition to using the Company’s capabilities to deliver greater impact for its client base. Accordingly, the Company paid a premium for the acquisition which is being reflected in the goodwill recognized from the purchase price allocation of the total consideration paid by the Company.
	The Company’s preliminary purchase price allocation for the acquisition is as follows:
			Amount
			(In thousands)
	Net tangible assets		$	1,313
	Identifiable intangible assets:
	Customer relationships			575
	Non-compete agreement			48
	Trade names and trademarks			267
	Goodwill			4,783
	Total purchase price*		$	6,986
	*	Includes $750 deposited in escrow accounts in connection with the acquisition.
	The customer relationships, non-compete agreements and trade names and trademarks intangibles from the Blue Slate acquisition are being amortized over a useful life of five years, four years and three years, respectively.
	During the nine months ended September 30, 2014 the company recognized $125 of acquisition related costs. Such amounts are included under general and administrative expenses in the unaudited consolidated statements of income.
	The amount of goodwill recognized from the Blue Slate acquisition is deductible for tax purposes.
	Goodwill
	The following table sets forth details of the Company’s goodwill balance as of September 30, 2014:
			Outsourcing			Transformation
			Services			Services			Total
	Balance at January 1, 2013		$	94,163		$	16,785		$	110,948
	Currency translation adjustments			(3,291	)		—			(3,291	)
	Allocation on sale of a business unit (1)			(250	)		—			(250	)
	Balance at December 31, 2013		$	90,622		$	16,785		$	107,407
	Goodwill arising from Blue Slate acquisition			—			4,783			4,783
	Currency translation adjustments			13			—			13
	Balance at September 30, 2014		$	90,635		$	21,568		$	112,203
	-1	Relates to the sale of a business unit (acquired with the acquisition of Business Process Outsourcing Inc.) during the year ended December 31, 2013. The net loss recognized from the sale of this business unit is $190 and is included under “other income/ (expense)” in the consolidated statements of income for the year ended December 31, 2013 included in the Company’s annual report on Form 10-K for the year ended December 31, 2013.
	Intangible Assets
	Information regarding the Company’s intangible assets is as follows:
			As of September 30, 2014
			Gross			Accumulated			Net Carrying
			Carrying			Amortization			Amount
			Amount
	Customer relationships		$	39,189		$	(15,505	)	$	23,684
	Leasehold benefits			2,988			(1,668	)		1,320
	Developed technology			6,013			(2,036	)		3,977
	Non-compete agreements			1,365			(1,320	)		45
	Trade names and trademarks			3,590			(2,071	)		1,519
			$	53,145		$	(22,600	)	$	30,545
			As of December 31, 2013
			Gross			Accumulated			Net Carrying
			Carrying			Amortization			Amount
			Amount
	Customer relationships		$	38,614		$	(12,201	)	$	26,413
	Leasehold benefits			2,986			(1,455	)		1,531
	Developed technology			6,013			(1,458	)		4,555
	Non-compete agreements			1,316			(1,316	)		—
	Trade names and trademarks			3,322			(1,706	)		1,616
			$	52,251		$	(18,136	)	$	34,115
	Amortization expense for the three months ended September 30, 2014 and 2013 was $1,441 and $1,534, respectively. Amortization expense for the nine months ended September 30, 2014 and 2013 was $4,467 and $4,764, respectively. The weighted average life of intangible assets was 8.9 years for customer relationships, 8.0 years for leasehold benefits, 8.0 years for developed technology, 4.0 years for non-compete agreements and 4.4 years for trade names and trademarks excluding indefinite life trade names and trademarks. The Company had $900 of indefinite lived trade names and trademarks as of September 30, 2014 and December 31, 2013.
	Estimated amortization of intangible assets during the year ending September 30,
	2015		$	5,760
	2016		$	5,760
	2017		$	5,729
	2018		$	5,543
	2019		$	5,405

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Summary of Accrued Expenses and Other Current Liabilities	'
	Accrued expenses and other current liabilities consist of the following:
		September 30,		December 31,
		2014		2013
	Accrued expenses	$	21,285	$	20,607
	Derivative instruments		2,858		7,689
	Other current liabilities		9,472		3,923
	Accrued expenses and other current liabilities	$	33,615	$	32,219
Summary of Non-current Liabilities	'
	Non-current liabilities consist of the following:
		September 30,		December 31,
		2014		2013
	Derivative instruments	$	1,384	$	5,606
	Unrecognized tax benefits		2,822		4,776
	Deferred rent		5,936		4,973
	Retirement benefits		1,680		3,543
	Other non-current liabilities		2,708		914
	Non-current liabilities	$	14,530	$	19,812

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Computation of Basic and Diluted Earnings Per Share	'
	The following table sets forth the computation of basic and diluted earnings per share:
		Three months ended September 30,				Nine months ended September 30,
		2014		2013		2014		2013
	Numerators:
	Net income	$	6,075	$	13,240	$	24,985	$	32,238
	Denominators:
	Basic weighted average common shares outstanding		32,890,475		32,907,281		32,743,384		32,737,267
	Dilutive effect of share based awards		786,190		1,048,164		850,920		1,122,258
	Diluted weighted average common shares outstanding		33,676,665		33,955,445		33,594,304		33,859,525
	Earnings per share:
	Basic	$	0.18	$	0.4	$	0.76	$	0.98
	Diluted	$	0.18	$	0.39	$	0.74	$	0.95
	Weighted average common shares considered anti-dilutive in computing diluted earnings per share		43,950		219,189		143,096		242,269

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Revenues and Cost of Revenues for Company's Outsourcing Services and Transformation Services Segments	'
	Revenues and cost of revenues for each of the three months ended September 30, 2014 and 2013 for the Company’s outsourcing services and transformation services segments, respectively, are as follows:
		Three months ended September 30, 2014						Three months ended September 30, 2013
		Outsourcing		Transformation		Total		Outsourcing		Transformation		Total
		Services		Services				Services		Services
	Revenues	$	91,155	$	31,302	$	122,457	$	99,672	$	22,643	$	122,315
	Cost of revenues (exclusive of depreciation and amortization)		62,870		22,113		84,983		56,531		15,518		72,049
	Gross profit	$	28,285	$	9,189	$	37,474	$	43,141	$	7,125	$	50,266
	Operating expenses						32,083						30,753
	Other income/(expense)						1,686						(2,043	)
	Income tax provision						1,002						4,230
	Net income					$	6,075					$	13,240
	Revenues and cost of revenues for each of the nine months ended September 30, 2014 and 2013 for the Company’s outsourcing services and transformation services segments, respectively, are as follows:
		Nine months ended September 30, 2014						Nine months ended September 30, 2013
		Outsourcing		Transformation				Outsourcing		Transformation
		Services		Services		Total		Services		Services		Total
	Revenues	$	285,560	$	78,432	$	363,992	$	294,573	$	59,756	$	354,329
	Cost of revenues (exclusive of depreciation and amortization)		184,263		56,901		241,164		175,490		43,402		218,892
	Gross profit	$	101,297	$	21,531	$	122,828	$	119,083	$	16,354	$	135,437
	Operating expenses						95,853						90,992
	Other income/(expense)						2,533						(1,365	)
	Income tax provision						4,523						10,842
	Net income					$	24,985					$	32,238

Business_Combinations_Goodwill1

Business Combinations, Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Summary of Purchase Price Allocation for Acquisitions	'
	The Company’s preliminary purchase price allocation for the acquisition is as follows:
			Amount
			(In thousands)
	Net tangible assets		$	1,313
	Identifiable intangible assets:
	Customer relationships			575
	Non-compete agreement			48
	Trade names and trademarks			267
	Goodwill			4,783
	Total purchase price*		$	6,986
	*	Includes $750 deposited in escrow accounts in connection with the acquisition.
Summary of Company's Goodwill	'
	The following table sets forth details of the Company’s goodwill balance as of September 30, 2014:
			Outsourcing			Transformation
			Services			Services			Total
	Balance at January 1, 2013		$	94,163		$	16,785		$	110,948
	Currency translation adjustments			(3,291	)		—			(3,291	)
	Allocation on sale of a business unit (1)			(250	)		—			(250	)
	Balance at December 31, 2013		$	90,622		$	16,785		$	107,407
	Goodwill arising from Blue Slate acquisition			—			4,783			4,783
	Currency translation adjustments			13			—			13
	Balance at September 30, 2014		$	90,635		$	21,568		$	112,203
	-1	Relates to the sale of a business unit (acquired with the acquisition of Business Process Outsourcing Inc.) during the year ended December 31, 2013. The net loss recognized from the sale of this business unit is $190 and is included under “other income/ (expense)” in the consolidated statements of income for the year ended December 31, 2013 included in the Company’s annual report on Form 10-K for the year ended December 31, 2013.
Summary of Company's Intangible Assets	'
	Information regarding the Company’s intangible assets is as follows:
			As of September 30, 2014
			Gross			Accumulated			Net Carrying
			Carrying			Amortization			Amount
			Amount
	Customer relationships		$	39,189		$	(15,505	)	$	23,684
	Leasehold benefits			2,988			(1,668	)		1,320
	Developed technology			6,013			(2,036	)		3,977
	Non-compete agreements			1,365			(1,320	)		45
	Trade names and trademarks			3,590			(2,071	)		1,519
			$	53,145		$	(22,600	)	$	30,545
			As of December 31, 2013
			Gross			Accumulated			Net Carrying
			Carrying			Amortization			Amount
			Amount
	Customer relationships		$	38,614		$	(12,201	)	$	26,413
	Leasehold benefits			2,986			(1,455	)		1,531
	Developed technology			6,013			(1,458	)		4,555
	Non-compete agreements			1,316			(1,316	)		—
	Trade names and trademarks			3,322			(1,706	)		1,616
			$	52,251		$	(18,136	)	$	34,115
Estimated Amortization of Intangible Assets	'
	Estimated amortization of intangible assets during the year ending September 30,
	2015		$	5,760
	2016		$	5,760
	2017		$	5,729
	2018		$	5,543
	2019		$	5,405

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014
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 on a recurring basis as of September 30, 2014 and December 31, 2013. The table excludes short-term investments, accounts receivable, accounts payable and accrued expenses for which fair values approximate their carrying amounts.
	As of September 30, 2014	Level 1		Level 2		Level 3		Total
	Assets
	Money market and mutual funds	$	114,072	$	—	$	—	$	114,072
	Derivative financial instruments		—		3,634		—		3,634
	Total	$	114,072	$	3,634	$	—	$	117,706
	Liabilities
	Derivative financial instruments	$	—	$	4,327	$	—	$	4,327
	Total	$	—	$	4,327	$	—	$	4,327
	As of December 31, 2013	Level 1		Level 2		Level 3		Total
	Assets
	Money market and mutual funds	$	116,662	$	—	$	—	$	116,662
	Derivative financial instruments		—		957		—		957
	Total	$	116,662	$	957	$	—	$	117,619
	Liabilities
	Derivative financial instruments	$	—	$	13,295	$	—	$	13,295
	Total	$	—	$	13,295	$	—	$	13,295

Derivatives_and_Hedge_Accounti1

Derivatives and Hedge Accounting (Tables)	9 Months Ended
	Sep. 30, 2014
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 Company’s unaudited consolidated financial statements:
	Derivatives designated as hedging instruments
		September 30,				December 31,
		2014				2013
	Other current assets:
	Foreign currency exchange contracts	$	1,364			$	437
	Other assets:
	Foreign currency exchange contracts	$	2,270			$	423
	Accrued expenses and other current liabilities:
	Foreign currency exchange contracts	$	2,858			$	7,689
	Other non-current liabilities:
	Foreign currency exchange contracts	$	1,384			$	5,606
	Derivatives not designated as hedging instruments:
		September 30,				December 31,
		2014				2013
	Other current assets:
	Foreign currency exchange contracts					$	97
	Accrued expenses and other current liabilities:
	Foreign currency exchange contracts	$	85
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 September 30, 2014 and 2013:
	Derivatives in Cash Flow	Amount of Gain/(Loss)								Location of Gain/(Loss)	Amount of						Location of Gain/(Loss)	Amount of Gain/
	Hedging Relationships	Recognized in AOCI on								Reclassified from	Gain/(Loss) Reclassified						Recognized in Income on	(Loss) Recognized in
		Derivative								AOCI into Income	from AOCI into						Derivative	Income on Derivative
		(Effective Portion)								(Effective Portion)	Income (Effective						(Ineffective Portion and	(Ineffective Portion and
											Portion)						Amount Excluded from	Amount  Excluded from
																	Effectiveness Testing)	Effectiveness Testing)
		2014				2013					2014			2013				2014		2013
	Foreign exchange contracts	$	(3,602	)		$	(6,210	)		Foreign exchange income/(loss)	$	(1,418	)	$	(1,332	)	Foreign exchange income/(loss)	$	—	$	—
	Derivatives not designated as Hedging Instruments	Location of Gain/(Loss)		Amount of Gain/(Loss)
				Recognized in Income on
		Recognized in Income on Derivatives		Derivatives
				2014				2013
	Foreign exchange contracts	Foreign exchange income/(loss)		$	(9	)		$	(2,169	)
	The following tables set forth the effect of foreign currency exchange contracts on the unaudited consolidated statements of income for the nine months ended September 30, 2014 and 2013:
	Derivatives in Cash Flow	Amount of Gain/(Loss)								Location of Gain/(Loss)	Amount of						Location of Gain/(Loss)	Amount of Gain/
	Hedging Relationships	Recognized in AOCI on								Reclassified from	Gain/(Loss) Reclassified						Recognized in Income on	(Loss) Recognized in
		Derivative								AOCI into Income	from AOCI into						Derivative	Income on Derivative
		(Effective Portion)								(Effective Portion)	Income (Effective							(Ineffective Portion and
											Portion)						(Ineffective Portion and	Amount Excluded from
																	Amount Excluded from	Effectiveness Testing)
																	Effectiveness Testing)
		2014				2013					2014			2013				2014		2013
	Foreign exchange contracts	$	5,950			$	(15,186	)		Foreign exchange income/(loss)	$	(5,877	)	$	(3,830	)	Foreign exchange income/(loss)	$	—	$	—
	Derivatives not designated as Hedging Instruments	Location of Gain or (Loss)		Amount of Gain/(Loss)
				Recognized in Income on
		Recognized in Income on Derivatives		Derivatives
				2014				2013
	Foreign exchange contracts	Foreign exchange income/(loss)		$	3,442			$	(4,708	)

Fixed_Assets_Tables

Fixed Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Property, Plant and Equipment [Abstract]	'
Schedule of Fixed Assets	'
	Fixed assets consist of the following:
		September 30,			December 31,
		2014			2013
	Owned Assets:
	Network equipment, computers and software	$	82,246		$	63,428
	Buildings		1,288			1,287
	Land		843			842
	Leasehold improvements		26,785			24,382
	Office furniture and equipment		12,769			11,111
	Motor vehicles		588			507
	Capital work in progress		2,734			715
			127,253			102,272
	Less: Accumulated depreciation and amortization		(83,110	)		(69,242	)
		$	44,143		$	33,030
	Assets under capital leases:
	Network equipment, computers and software	$	—		$	184
	Leasehold improvements		1,955			1,955
	Office furniture and equipment		923			1,079
	Motor vehicles		892			934
			3,770			4,152
	Less: Accumulated depreciation and amortization		(2,606	)		(2,618	)
		$	1,164		$	1,534
	Fixed assets, net	$	45,307		$	34,564

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Net Gratuity Cost	'
	Net gratuity cost includes the following components:
			Three months ended September 30,						Nine months ended September 30,
			2014			2013			2014			2013
	Service cost		$	355		$	266		$	1,083		$	867
	Interest cost			125			103			385			339
	Expected return on plan assets			(43	)		(38	)		(130	)		(125	)
	Actuarial loss			29			32			99			106
	Net gratuity cost		$	466		$	363		$	1,437		$	1,187
Change in Plan Assets	'
	Change in Plan Assets
	Plan assets at January 1, 2014		$	2,156
	Employer contribution			2,534
	Expected return			148
	Benefits paid*			—
	Effect of exchange rate changes			(1	)
	Plan assets at September 30, 2014		$	4,837
	*	Benefit payments were made directly by the Company and not through the plan assets during the three and nine months ended September 30, 2014.
Contribution to Various Defined Contribution Plans	'
	During the three and nine month periods ended September 30, 2014 and 2013, the Company contributed the following amounts to various defined contribution plans on behalf of its employees in India, the Philippines, Romania, Bulgaria, and the Czech Republic:
	Three months ended September 30, 2014		$	1,418
	Three months ended September 30, 2013		$	1,289
	Nine months ended September 30, 2014		$	4,279
	Nine months ended September 30, 2013		$	4,149

Leases_Tables

Leases (Tables)	9 Months Ended
	Sep. 30, 2014
Leases [Abstract]	'
Future Minimum Lease Payments under Capital Leases	'
	Future minimum lease payments under these capital leases as of September 30, 2014 are as follows:
	Year ending September 30,
	2015	$	1,164
	2016		692
	2017		184
	2018		42
	Total minimum lease payments		2,082
	Less: amount representing interest		210
	Present value of minimum lease payments		1,872
	Less: current portion		1,022
	Long term capital lease obligation	$	850
Future Minimum Lease Payments under Non-Cancelable Operating Lease Agreements Expiring After September 30, 2014	'
	Future minimum lease payments under non-cancelable agreements expiring after September 30, 2014 are set forth below:
	Year ending September 30,
	2015	$	9,777
	2016		6,978
	2017		2,409
	2018		1,728
	2019		1,300
	2020 and thereafter		178
		$	22,370

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2014
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, 2014 through September 30, 2014:
	Balance as of January 1, 2014	$	4,913
	Increases related to prior year tax positions		—
	Decreases related to prior year tax positions		(2,173	)
	Increases related to current year tax positions		—
	Decreases related to current year tax positions		—
	Effect of exchange rate changes		58
	Balance as of September 30, 2014	$	2,798

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
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 September 30,						Nine months ended September 30,
			2014			2013			2014			2013
	Cost of revenue		$	410		$	660		$	1,873		$	2,058
	General and administrative expenses			985			1,142			3,285			3,958
	Selling and marketing expenses			981			1,165			3,360			3,456
	Total		$	2,376		$	2,967		$	8,518		$	9,472
Fair Value of Each Stock Option Granted to Employees	'
	The fair value of each stock option granted to employees is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions:
			Nine months ended September 30,
			2014			2013
	Dividend yield			0	%		0	%
	Expected life (years)			5.5			5.5
	Risk free interest rate			1.84	%		0.87	%
	Volatility			35	%		40	%
Stock Based Compensation Stock Option Activity	'
	Stock option activity under the Company’s stock plans is shown below:
			Number of			Weighted-			Aggregate			Weighted-
			Options			Average Exercise			Intrinsic			Average
						Price			Value			Remaining
												Contractual Life
												(Years)
	Outstanding at December 31, 2013			1,956,515		$	16.25		$	22,255			5.55
	Granted			9,794			27.62
	Exercised			(324,534	)		15.32
	Forfeited/Expired			(77,750	)		24.73
	Outstanding at September 30, 2014			1,564,025		$	16.09		$	13,210			4.65
	Vested and exercisable at September 30, 2014			1,320,872		$	14.74		$	12,872			4.26
	Available for grant at September 30, 2014			1,380,540
Restricted Stock Units [Member]	'
Restricted Stock Activity Under Company's Stock Plans	'
	Restricted Stock and Restricted Stock Units
	Restricted stock and restricted stock units activity under the Company’s stock plans is shown below:
			Restricted Stock						Restricted Stock Units
			Number			Weighted-			Number			Weighted-
						Average Fair						Average Fair
						Value						Value
	Outstanding at December 31, 2013			—		$	—			1,144,442		$	24.95
	Granted			46,950			29.29			498,595			26.23
	Vested			—			—			(417,010	)		21.91
	Forfeited			—			—			(129,430	)		26.27
	Outstanding at September 30, 2014*			46,950		$	29.29			1,096,597		$	26.53
	*	Excludes 120,000 and 112,000 vested restricted stock units as of September 30, 2014 and December 31, 2013, respectively, for which the underlying common stock is yet to be issued.
Performance Based Stock Awards [Member]	'
Restricted Stock Activity Under Company's Stock Plans	'
	Performance restricted stock unit activity under the Company’s stock plans is shown below:
			Revenue Based PRSU’s						Market Condition Based
									PRSU’s
			Number			Weighted Avg			Number			Weighted
						Fair Value						Avg Fair
												Value
	Outstanding at Dec 31, 2013			—		$	—			—		$	—
	Granted			55,475			25.63			55,475			33.6
	Vested			—			—			—			—
	Forfeited			(7,750	)		25.63			(7,750	)		33.6
	Outstanding at September 30, 2014			47,725		$	25.63			47,725		$	33.6

Geographical_Information_Table

Geographical Information (Tables)	9 Months Ended
	Sep. 30, 2014
Text Block [Abstract]	'
Revenues Based on Geographical Information	'
		Three months ended September 30,				Nine months ended September 30,
		2014		2013		2014		2013
	Revenues
	United States	$	89,337	$	91,995	$	267,638	$	259,769
	United Kingdom		26,060		23,000		74,215		70,186
	Rest of World		7,060		7,320		22,139		24,374
		$	122,457	$	122,315	$	363,992	$	354,329
Fixed Assets, Net Based on Geographical Information	'
		September 30,		December 31,
		2014		2013
	Fixed assets, net
	India	$	26,141	$	21,433
	United States		6,853		3,981
	Philippines		11,724		8,409
	Rest of World		589		741
		$	45,307	$	34,564

Summary_of_Significant_Account2

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accounting Policies [Abstract]	'	'	'	'
Reduction in revenues related to reimbursement of transition related costs	$9,626	$0	$17,815	$0

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Summary of Accrued Expenses and Other Current Liabilities (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]	'	'
Accrued expenses	$21,285	$20,607
Derivative instruments	2,858	7,689
Other current liabilities	9,472	3,923
Accrued expenses and other current liabilities	$33,615	$32,219

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Summary of Non-current Liabilities (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Summary of non-current liabilities	'	'
Derivative instruments	$1,384	$5,606
Unrecognized tax benefits	2,822	4,776
Deferred rent	5,936	4,973
Retirement benefits	1,680	3,543
Other non-current liabilities	2,708	914
Non-current liabilities	$14,530	$19,812

Earnings_Per_Share_Computation

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerators:	'	'	'	'
Net income	$6,075	$13,240	$24,985	$32,238
Denominators:	'	'	'	'
Basic weighted average common shares outstanding	32,890,475	32,907,281	32,743,384	32,737,267
Dilutive effect of share based awards	786,190	1,048,164	850,920	1,122,258
Diluted weighted average common shares outstanding	33,676,665	33,955,445	33,594,304	33,859,525
Earnings per share:	'	'	'	'
Basic	$0.18	$0.40	$0.76	$0.98
Diluted	$0.18	$0.39	$0.74	$0.95
Weighted average common shares considered anti-dilutive in computing diluted earnings per share	43,950	219,189	143,096	242,269

Segment_Information_Additional

Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2014
	Segment
Segment Reporting [Abstract]	'
Number of reportable segments	2

Segment_Information_Revenues_a

Segment Information - Revenues and Cost of Revenues for Company's Outsourcing Services and Transformation Services Segments (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues and cost of revenues for Company's outsourcing services and transformation services segments [Line Items]	'	'	'	'
Revenues	$122,457	$122,315	$363,992	$354,329
Cost of revenues (exclusive of depreciation and amortization)	84,983	72,049	241,164	218,892
Gross profit	37,474	50,266	122,828	135,437
Operating expenses	32,083	30,753	95,853	90,992
Other income/(expense)	1,686	-2,043	2,533	-1,365
Income tax provision	1,002	4,230	4,523	10,842
Net income	6,075	13,240	24,985	32,238
Outsourcing Services [Member]	'	'	'	'
Revenues and cost of revenues for Company's outsourcing services and transformation services segments [Line Items]	'	'	'	'
Revenues	91,155	99,672	285,560	294,573
Cost of revenues (exclusive of depreciation and amortization)	62,870	56,531	184,263	175,490
Gross profit	28,285	43,141	101,297	119,083
Transformation Services [Member]	'	'	'	'
Revenues and cost of revenues for Company's outsourcing services and transformation services segments [Line Items]	'	'	'	'
Revenues	31,302	22,643	78,432	59,756
Cost of revenues (exclusive of depreciation and amortization)	22,113	15,518	56,901	43,402
Gross profit	$9,189	$7,125	$21,531	$16,354

Business_Combinations_Goodwill2

Business Combinations, Goodwill and Intangible Assets - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

In Thousands, except Share data, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Jul. 01, 2014

Sep. 30, 2014

Jul. 01, 2014

Jul. 01, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Blue Slate [Member]

Blue Slate [Member]

Blue Slate [Member]

Blue Slate [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Leasehold Benefits [Member]

Developed Technology [Member]

Non-compete Agreements [Member]

Non-compete Agreements [Member]

Trade Names and Trademarks [Member]

Trade Names and Trademarks [Member]

Restricted Stock [Member]

Blue Slate [Member]

Blue Slate [Member]

Blue Slate [Member]

Acquired Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition, Agreement date

'

'

'

'

'

'

1-Jul-14

'

'

'

'

'

'

'

'

'

'

Business acquisition, cash consideration

'

'

'

'

'

$6,986

'

'

'

'

'

'

'

'

'

'

'

Working capital adjustments included in business acquisitions cash consideration

'

'

'

'

'

'

'

751

'

'

'

'

'

'

'

'

'

Business acquisition, Number of restricted shares of common stock issued

'

'

'

'

'

'

'

'

46,950

'

'

'

'

'

'

'

'

Business acquisition, aggregate fair value amount of restricted shares of common stock

'

'

'

'

'

'

'

1,375

'

'

'

'

'

'

'

'

'

Useful life

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'4 years

'

'3 years

Acquisition related costs

'

'

125

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization expense

1,441

1,534

4,467

4,764

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average life of intangible assets

'

'

'

'

'

'

'

'

'

'8 years 10 months 24 days

'

'8 years

'8 years

'4 years

'

'4 years 4 months 24 days

'

Indefinite lived trade names and trademarks

$900

'

$900

'

$900

'

'

'

'

'

'

'

'

'

'

'

'

Business_Combinations_Goodwill3

Business Combinations, Goodwill and Intangible Assets - Summary of Purchase Price Allocation for Acquisitions (Detail) (USD $)	Sep. 30, 2014	Jul. 01, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Business Combination Purchase Price Allocation [Line Items]	'	'	'	'
Net tangible assets	'	$1,313	'	'
Goodwill	112,203	4,783	107,407	110,948
Total purchase price	'	6,986	'	'
Customer Relationships [Member]	'	'	'	'
Schedule Of Business Combination Purchase Price Allocation [Line Items]	'	'	'	'
Identifiable intangible assets	'	575	'	'
Non-compete Agreements [Member]	'	'	'	'
Schedule Of Business Combination Purchase Price Allocation [Line Items]	'	'	'	'
Identifiable intangible assets	'	48	'	'
Trade Names and Trademarks [Member]	'	'	'	'
Schedule Of Business Combination Purchase Price Allocation [Line Items]	'	'	'	'
Identifiable intangible assets	'	$267	'	'

Business_Combinations_Goodwill4

Business Combinations, Goodwill and Intangible Assets - Summary of Purchase Price Allocation for Acquisitions (Parenthetical) (Detail) (USD $)	Jul. 01, 2014
In Thousands, unless otherwise specified
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]	'
Deposit in escrow accounts in connection with acquisition	$750

Business_Combinations_Goodwill5

Business Combinations, Goodwill and Intangible Assets - Summary of Company's Goodwill (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Jul. 01, 2014
Goodwill [Line Items]	'	'	'
Beginning Balance	$107,407	$110,948	$4,783
Goodwill arising from Blue Slate acquisition	4,783	'	'
Currency translation adjustments	13	-3,291	'
Allocation on sale of a business unit	'	-250	'
Ending Balance	112,203	107,407	4,783
Outsourcing Services [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Beginning Balance	90,622	94,163	'
Goodwill arising from Blue Slate acquisition	'	'	'
Currency translation adjustments	13	-3,291	'
Allocation on sale of a business unit	'	-250	'
Ending Balance	90,635	90,622	'
Transformation Services [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Beginning Balance	16,785	16,785	'
Goodwill arising from Blue Slate acquisition	4,783	'	'
Currency translation adjustments	'	'	'
Allocation on sale of a business unit	'	'	'
Ending Balance	$21,568	$16,785	'

Business_Combinations_Goodwill6

Business Combinations, Goodwill and Intangible Assets - Summary of Company's Goodwill (Parenthetical) (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
Net loss recognized from the sale of business unit	$190	$190

Business_Combinations_Goodwill7

Business Combinations, Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$53,145	$52,251
Accumulated Amortization	-22,600	-18,136
Net Carrying Amount	30,545	34,115
Customer Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	39,189	38,614
Accumulated Amortization	-15,505	-12,201
Net Carrying Amount	23,684	26,413
Leasehold Benefits [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	2,988	2,986
Accumulated Amortization	-1,668	-1,455
Net Carrying Amount	1,320	1,531
Developed Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	6,013	6,013
Accumulated Amortization	-2,036	-1,458
Net Carrying Amount	3,977	4,555
Non-compete Agreements [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	1,365	1,316
Accumulated Amortization	-1,320	-1,316
Net Carrying Amount	45	'
Trade Names and Trademarks [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	3,590	3,322
Accumulated Amortization	-2,071	-1,706
Net Carrying Amount	$1,519	$1,616

Business_Combinations_Goodwill8

Business Combinations, Goodwill and Intangible Assets - Estimated Amortization of Intangible Assets (Detail) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]	'
2015	$5,760
2016	5,760
2017	5,729
2018	5,543
2019	$5,405

Fair_Value_Measurements_Assets

Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Detail) (Fair Value, Measurements, Recurring [Member], USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Money market and mutual funds	$114,072	$116,662
Derivative financial instruments	3,634	957
Total	117,706	117,619
Liabilities	'	'
Derivative financial instruments	4,327	13,295
Total	4,327	13,295
Level 1 [Member]	'	'
Assets	'	'
Money market and mutual funds	114,072	116,662
Derivative financial instruments	'	'
Total	114,072	116,662
Liabilities	'	'
Derivative financial instruments	'	'
Total	'	'
Level 2 [Member]	'	'
Assets	'	'
Money market and mutual funds	'	'
Derivative financial instruments	3,634	957
Total	3,634	957
Liabilities	'	'
Derivative financial instruments	4,327	13,295
Total	4,327	13,295
Level 3 [Member]	'	'
Assets	'	'
Money market and mutual funds	'	'
Derivative financial instruments	'	'
Total	'	'
Liabilities	'	'
Derivative financial instruments	'	'
Total	'	'

Derivatives_and_Hedge_Accounti2

Derivatives and Hedge Accounting - Additional Information (Detail)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2013
	USD ($)	USD ($)	USD ($)	Foreign Currency Exchange Contracts [Member]	Foreign Currency Exchange Contracts [Member]	Foreign Currency Exchange Contracts [Member]	Foreign Currency Exchange Contracts [Member]
				USD ($)	GBP (£)	USD ($)	GBP (£)
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'	'	'	'
Foreign exchange contracts outstanding	'	'	'	$302,400	£ 11,090	$262,085	£ 10,973
Net derivative losses which could be reclassified into earnings within the next 12 months	'	1,494	'	'	'	'	'
Maximum outstanding term of cash flow hedges	'	'45 months	'	'	'	'	'
Gain/(Losses) that reclassified from AOCI into earning for discontinued hedging transactions	$0	'	$0	'	'	'	'

Derivatives_and_Hedge_Accounti3

Derivatives and Hedge Accounting - Summary of Fair Value of Foreign Currency Exchange Contracts (Detail) (Foreign Currency Exchange Contracts [Member], USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivatives Designated as Hedging Instruments [Member] | Other Current Assets [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Asset	$1,364	$437
Derivatives Designated as Hedging Instruments [Member] | Other Assets [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Asset	2,270	423
Derivatives Designated as Hedging Instruments [Member] | Accrued Expenses and Other Current Liabilities [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Liability	2,858	7,689
Derivatives Designated as Hedging Instruments [Member] | Other Non-Current Liabilities [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Liability	1,384	5,606
Derivatives not Designated as Hedging Instruments [Member] | Other Current Assets [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Asset	'	97
Derivatives not Designated as Hedging Instruments [Member] | Accrued Expenses and Other Current Liabilities [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Liability	$85	'

Derivatives_and_Hedge_Accounti4

Derivatives and Hedge Accounting - Summary of Effect of Foreign Currency Exchange Contracts on Consolidated Statements of Income (Detail) (Foreign Currency Exchange Contracts [Member], USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivatives Designated as Hedging Instruments [Member] | Derivatives in Cash Flow Hedging Relationships [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Amount of Gain/(Loss) Recognized in AOCI on Derivative (Effective Portion)	($3,602)	($6,210)	$5,950	($15,186)
Foreign Exchange Income/Loss [Member] | Derivatives not Designated as Hedging Instruments [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Amount of Gain/(Loss) Recognized in Income on Derivatives	-9	-2,169	3,442	-4,708
Foreign Exchange Income/Loss [Member] | Derivatives Designated as Hedging Instruments [Member] | Derivatives in Cash Flow Hedging Relationships [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	'	'	'	'
Foreign Exchange Income/Loss [Member] | Derivatives Designated as Hedging Instruments [Member] | Reclassification Out of Accumulated Other Comprehensive Income [Member] | Derivatives in Cash Flow Hedging Relationships [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Amount of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	($1,418)	($1,332)	($5,877)	($3,830)

Fixed_Assets_Schedule_of_Fixed

Fixed Assets - Schedule of Fixed Assets (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Owned Assets:	'	'
Owned Assets, Gross	$127,253	$102,272
Less: Accumulated depreciation and amortization	-83,110	-69,242
Owned Assets, net	44,143	33,030
Assets under capital leases:	'	'
Capital leased assets, Gross	3,770	4,152
Less: Accumulated depreciation and amortization	-2,606	-2,618
Assets under capital leases, net	1,164	1,534
Fixed assets, net	45,307	34,564
Network Equipment, Computers and Software [Member]	'	'
Owned Assets:	'	'
Owned Assets, Gross	82,246	63,428
Assets under capital leases:	'	'
Capital leased assets, Gross	'	184
Buildings [Member]	'	'
Owned Assets:	'	'
Owned Assets, Gross	1,288	1,287
Land [Member]	'	'
Owned Assets:	'	'
Owned Assets, Gross	843	842
Leasehold Improvements [Member]	'	'
Owned Assets:	'	'
Owned Assets, Gross	26,785	24,382
Assets under capital leases:	'	'
Capital leased assets, Gross	1,955	1,955
Office Furniture and Equipment [Member]	'	'
Owned Assets:	'	'
Owned Assets, Gross	12,769	11,111
Assets under capital leases:	'	'
Capital leased assets, Gross	923	1,079
Motor Vehicles [Member]	'	'
Owned Assets:	'	'
Owned Assets, Gross	588	507
Assets under capital leases:	'	'
Capital leased assets, Gross	892	934
Capital Work in Progress [Member]	'	'
Owned Assets:	'	'
Owned Assets, Gross	$2,734	$715

Fixed_Assets_Additional_Inform

Fixed Assets - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Property, Plant and Equipment [Abstract]	'	'	'	'
Depreciation and amortization expense	$5,573	$4,435	$15,582	$14,079

Capital_Structure_Additional_I

Capital Structure - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
			ClassOfCommonStock
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'	'	'
Class of common stock outstanding	'	'	1	'
Acquisition of restricted stock from employees in connection with withholding tax payments	0	0	18,256	13,018
Withholding tax payments related to the vesting of restricted stock for total consideration	'	'	$459	$389
Weighted average purchase price per share prior to the vesting date	'	'	$25.14	$29.89
Common stock shares purchased under the repurchase program	109,500	'	'	'
Common stock aggregate purchase price including commissions	2,863	'	'	'
Common stock average purchase price per share	$26.14	'	'	'
Aggregate principal amount of outstanding common stock authorization under the repurchase program	$25,000	'	$25,000	'

Employee_Benefit_Plans_Net_Gra

Employee Benefit Plans - Net Gratuity Cost (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'	'	'	'
Service cost	$355	$266	$1,083	$867
Interest cost	125	103	385	339
Expected return on plan assets	-43	-38	-130	-125
Actuarial loss	29	32	99	106
Net gratuity cost	$466	$363	$1,437	$1,187

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Mar. 31, 2014	Mar. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'	'	'	'	'	'
Percentage of actual return on the gratuity plans	'	'	'	'	9.00%	9.50%
Percentage of discretionary contributions towards 401(k) Plan, Maximum	3.00%	3.00%	3.00%	3.00%	'	'
Company's contribution to the 401(k) Plan	$192	$370	$1,037	$1,343	'	'

Employee_Benefit_Plans_Change_

Employee Benefit Plans - Change in Plan Assets (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Plan assets at January 1, 2014	$2,156
Employer contribution	2,534
Expected return	148
Benefits paid	'
Effect of exchange rate changes	-1
Plan assets at September 30, 2014	$4,837

Employee_Benefit_Plans_Contrib

Employee Benefit Plans - Contribution to Various Defined Contribution Plans (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'	'	'	'
Contribution to various defined contribution plans	$1,418	$1,289	$4,279	$4,149

Leases_Future_Minimum_Lease_Pa

Leases - Future Minimum Lease Payments under Capital Leases (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Leases [Abstract]	'	'
2015	$1,164	'
2016	692	'
2017	184	'
2018	42	'
Total minimum lease payments	2,082	'
Less: amount representing interest	210	'
Present value of minimum lease payments	1,872	'
Less: current portion	1,022	1,119
Long term capital lease obligation	850	1,371
Present value of minimum lease payments	$1,872	'

Leases_Future_Minimum_Lease_Pa1

Leases - Future Minimum Lease Payments under Non-Cancelable Operating Lease Agreements Expiring After September 30, 2014 (Detail) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified
Leases [Abstract]	'
2015	$9,777
2016	6,978
2017	2,409
2018	1,728
2019	1,300
2020 and thereafter	178
Total operating lease payments	$22,370

Leases_Additional_Information_

Leases - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Leases [Abstract]	'	'	'	'	'
Rent expense under both cancelable and non-cancelable operating leases	$4,897	$4,264	$14,153	$13,049	'
Deferred rent	$6,528	'	$6,528	'	$5,394

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended			9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'	'	'	'	'	'
Income tax expense	$1,002	'	$4,230	$4,523	$10,842	'
Effective tax rates	14.20%	'	24.20%	15.30%	25.20%	'
Reversal of unrecognized tax benefit	'	2,173	'	2,173	'	'
Unrecognized tax benefits	2,798	'	'	2,798	'	4,913
Recognized interest	54	'	52	'	'	'
Accrued interest on unrecognized tax benefits	$1,024	'	'	$1,024	'	$863

Income_Taxes_Summary_of_Activi

Income Taxes - Summary of Activity Related to Gross Unrecognized Tax Benefits (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'	'
Balance as of January 1, 2014	'	$4,913
Increases related to prior year tax positions	'	'
Decreases related to prior year tax positions	-2,173	-2,173
Increases related to current year tax positions	'	'
Decreases related to current year tax positions	'	'
Effect of exchange rate changes	'	58
Balance as of September 30, 2014	'	$2,798

StockBased_Compensation_Costs_

Stock-Based Compensation - Costs Related to Company's Stock-Based Compensation Plan (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]	'	'	'	'
Stock-based compensation expenses	$2,376	$2,967	$8,518	$9,472
Cost of Revenue [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]	'	'	'	'
Stock-based compensation expenses	410	660	1,873	2,058
General and Administrative Expenses [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]	'	'	'	'
Stock-based compensation expenses	985	1,142	3,285	3,958
Selling and Marketing Expenses [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]	'	'	'	'
Stock-based compensation expenses	$981	$1,165	$3,360	$3,456

StockBased_Compensation_Fair_V

Stock-Based Compensation - Fair Value of Each Stock Option Granted to Employees (Detail)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'
Dividend yield	0.00%	0.00%
Expected life (years)	'5 years 6 months	'5 years 6 months
Risk free interest rate	1.84%	0.87%
Volatility	35.00%	40.00%

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Stock Option [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Expected dividend yield	'	'	$0	'
Unrecognized compensation cost for unvested options	1,178	'	1,178	'
Expected weighted average period	'	'	'1 year 1 month 17 days	'
Weighted-average fair value of options granted	'	'	$9.77	$10.07
Total grant date fair value of option vested in period	693	541	1,917	2,865
Restricted Stock Units [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Unrecognized compensation cost for unvested Stock Units	23,720	'	23,720	'
Expected expensed over a weighted average period	'	'	'2 years 6 months 26 days	'
Performance Based Stock Awards [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Unrecognized compensation cost for unvested Stock Units	$2,298	'	$2,298	'
Expected expensed over a weighted average period	'	'	'2 years 3 months	'
Number of shares of common stock equivalent to each target share	'	'	1	'
Revenue Based Performance Restricted Stock Units [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Performance based percentage	50.00%	'	50.00%	'
Vesting period	'	'	'3 years	'
Revenue Based Performance Restricted Stock Units [Member] | Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Percentage of target shares an employee can earn	'	'	200.00%	'
Market Condition Based Performance Restricted Stock Units [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Performance based percentage	50.00%	'	50.00%	'
Vesting period	'	'	'3 years	'
Market Condition Based Performance Restricted Stock Units [Member] | Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Percentage of target shares an employee can earn	'	'	200.00%	'

StockBased_Compensation_Stock_

Stock-Based Compensation - Stock Based Compensation Stock Option Activity (Detail) (Stock Option [Member], USD $)	9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Stock Option [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of Options, Outstanding, Beginning Balance	1,956,515	'
Number of Options, Granted	9,794	'
Number of Options, Exercised	-324,534	'
Number of Options, Forfeited/Expired	-77,750	'
Number of Options, Outstanding, Ending Balance	1,564,025	1,956,515
Number of Options, Vested and exercisable at September 30, 2014	1,320,872	'
Number of Options, Available for grant at September 30, 2014	1,380,540	'
Weighted-Average Exercise Price, Outstanding, Beginning Balance	$16.25	'
Weighted-Average Exercise Price, Granted	$27.62	'
Weighted-Average Exercise Price, Exercised	$15.32	'
Weighted-Average Exercise Price, Forfeited/Expired	$24.73	'
Weighted-Average Exercise Price, Outstanding, Ending Balance	$16.09	$16.25
Weighted Average Exercise Price, Vested and exercisable	$14.74	'
Aggregate Intrinsic Value, Outstanding, Beginning Balance	$22,255	'
Aggregate Intrinsic Value, Outstanding, Ending Balance	13,210	22,255
Aggregate Intrinsic Value, Vested and exercisable at September 30, 2014	$12,872	'
Weighted-Average Remaining Contractual Life (Years), Outstanding	'4 years 7 months 24 days	'5 years 6 months 18 days
Weighted-Average Remaining Contractual Life (Years), Vested and exercisable at September 30, 2014	'4 years 3 months 4 days	'

StockBased_Compensation_Restri

Stock-Based Compensation - Restricted Stock Activity Under Company's Stock Plans (Detail) (USD $)	9 Months Ended
	Sep. 30, 2014
Restricted Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number, Outstanding, Beginning Balance	1,144,442
Number, Granted	498,595
Number, Vested	-417,010
Number, Forfeited	-129,430
Number, Outstanding, Ending Balance	1,096,597
Weighted-Average Fair Value, Outstanding, Beginning Balance	$24.95
Weighted-Average Fair Value, Granted	$26.23
Weighted-Average Fair Value, Vested	$21.91
Weighted-Average Fair Value, Forfeited	$26.27
Weighted-Average Fair Value, Outstanding, Ending Balance	$26.53
Revenue Based Performance Restricted Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number, Outstanding, Beginning Balance	'
Number, Granted	55,475
Number, Vested	'
Number, Forfeited	-7,750
Number, Outstanding, Ending Balance	47,725
Weighted-Average Fair Value, Outstanding, Beginning Balance	'
Weighted-Average Fair Value, Granted	$25.63
Weighted-Average Fair Value, Vested	'
Weighted-Average Fair Value, Forfeited	$25.63
Weighted-Average Fair Value, Outstanding, Ending Balance	$25.63
Market Condition Based Performance Restricted Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number, Outstanding, Beginning Balance	'
Number, Granted	55,475
Number, Vested	'
Number, Forfeited	-7,750
Number, Outstanding, Ending Balance	47,725
Weighted-Average Fair Value, Outstanding, Beginning Balance	'
Weighted-Average Fair Value, Granted	$33.60
Weighted-Average Fair Value, Vested	'
Weighted-Average Fair Value, Forfeited	$33.60
Weighted-Average Fair Value, Outstanding, Ending Balance	$33.60
Restricted Stock [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number, Granted	46,950
Number, Outstanding, Ending Balance	46,950
Weighted-Average Fair Value, Granted	$29.29
Weighted-Average Fair Value, Outstanding, Ending Balance	$29.29

StockBased_Compensation_Restri1

Stock-Based Compensation - Restricted Stock Activity Under Company's Stock Plans (Parenthetical) (Detail) (Restricted Stock Units [Member])	Sep. 30, 2014	Dec. 31, 2013
Restricted Stock Units [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Restricted stock units vested for which underlying common stock to be issued	120,000	112,000

Geographical_Information_Reven

Geographical Information - Revenues Based on Geographical Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues	'	'	'	'
Revenues	$122,457	$122,315	$363,992	$354,329
United States [Member]	'	'	'	'
Revenues	'	'	'	'
Revenues	89,337	91,995	267,638	259,769
United Kingdom [Member]	'	'	'	'
Revenues	'	'	'	'
Revenues	26,060	23,000	74,215	70,186
Rest of World [Member]	'	'	'	'
Revenues	'	'	'	'
Revenues	$7,060	$7,320	$22,139	$24,374

Geographical_Information_Fixed

Geographical Information - Fixed Assets, Net Based on Geographical Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fixed assets, net	'	'
Total Fixed assets	$45,307	$34,564
India [Member]	'	'
Fixed assets, net	'	'
Total Fixed assets	26,141	21,433
United States [Member]	'	'
Fixed assets, net	'	'
Total Fixed assets	6,853	3,981
Philippines [Member]	'	'
Fixed assets, net	'	'
Total Fixed assets	11,724	8,409
Rest of World [Member]	'	'
Fixed assets, net	'	'
Total Fixed assets	$589	$741

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'	'
Purchase commitments, net of advances	$6,840	'
Export-Oriented units established percentage	100.00%	'
Transfer pricing issues starting period	'2003	'
Transfer pricing issues ending period	'2010	'
Permanent establishment issues starting period	'2003	'
Permanent establishment issues ending period	'2007	'
Aggregate disputed amount	18,015	14,742
Deposited or Bank guarantees provided	14,970	13,797
Amounts paid as deposits in respect of contingencies	12,825	11,653
Bank guarantees issued	$2,145	$2,144

Subsequent_Event_Additional_In

Subsequent Event - Additional Information (Detail) (Subsequent Event [Member], USD $)	0 Months Ended		0 Months Ended					9 Months Ended
In Thousands, unless otherwise specified	Oct. 27, 2014	Oct. 27, 2014	Oct. 27, 2014	Oct. 27, 2014	Oct. 27, 2014	Oct. 27, 2014	Oct. 24, 2014	Sep. 30, 2014
	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Overland Holdings, Inc.[Member]	Overland Holdings, Inc.[Member]
			Minimum [Member]	Maximum [Member]	ABR Loans [Member]	Eurodollar [Member]
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'
Acquisition pursuant to agreement and plan of merger date	'	'	'	'	'	'	'	24-Oct-14
Aggregate merger consideration for outstanding capital stock	'	'	'	'	'	'	$53,000	'
Revolving credit facility	'	$50,000	'	'	'	'	'	'
Debt Instrument, Interest Rate Terms	'Depending on the type of borrowing, loans under the Credit Agreement bear interest at a rate equal to the specified prime rate (alternate base rate) or adjusted LIBO rate, plus, in each case, an applicable margin. The applicable margin is tied to the Companybs leverage ratio and ranges from 0.25% to 0.75% per annum with respect to loans (bABR Loansb) pegged to the specified prime rate, and 1.25% to 1.75% per annum on loans (bEurodollar Loansb) pegged to the adjusted LIBO rate (such applicable margin, the bApplicable Rateb). The revolving credit commitments under the Credit Agreement are subject to a commitment fee. The commitment fee is also tied to the Companybs leverage ratio, and ranges from 0.20% to 0.30% per annum on the average daily amount by which the aggregate revolving commitments exceed the sum of outstanding revolving loans and letter of credit obligations.	'	'	'	'	'	'	'
Applicable interest rate on loans pegged to specified prime rate, minimum	'	'	'	'	0.25%	'	'	'
Applicable interest rate on loans pegged to specified prime rate, maximum	'	'	'	'	0.75%	'	'	'
Applicable interest rate on loans pegged to LIBO rate (Applicable Rate), minimum	'	'	'	'	'	1.25%	'	'
Applicable interest rate on loans pegged to LIBO rate (Applicable Rate), maximum	'	'	'	'	'	1.75%	'	'
Commitment fee percentage range	'	'	0.20%	0.30%	'	'	'	'