ExlService (EXLS) 10-Q 29 Jul 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 25, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
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	'	32,767,199

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$160,937	$148,065
Short-term investments	7,556	5,987
Restricted cash	571	423
Accounts receivable, net	73,721	76,121
Prepaid expenses	5,564	5,168
Deferred tax assets, net	4,843	6,958
Advance income tax, net	8,447	2,024
Other current assets	11,223	7,881
Total current assets	272,862	252,627
Fixed assets, net	45,978	34,564
Restricted cash	3,800	3,568
Deferred tax assets, net	8,544	12,254
Intangible assets, net	31,147	34,115
Goodwill	108,120	107,407
Other assets	23,822	18,897
Total assets	494,273	463,432
Current liabilities:	'	'
Accounts payable	4,294	4,714
Deferred revenue	9,659	8,618
Accrued employee cost	24,886	29,405
Accrued expenses and other current liabilities	29,722	32,219
Current portion of capital lease obligations	1,058	1,119
Total current liabilities	69,619	76,075
Capital lease obligations, less current portion	977	1,371
Non-current liabilities	14,385	19,812
Total liabilities	84,981	97,258
Commitments and contingencies (See Note 15)	'	'
Preferred stock, $0.001 par value; 15,000,000 shares authorized, none issued	0	0
Stockholders' equity:	'	'
Common stock, $0.001 par value; 100,000,000 shares authorized, 33,922,584 shares issued and 32,734,199 shares outstanding as of June 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	223,477	214,522
Retained earnings	255,889	236,979
Accumulated other comprehensive loss	-45,007	-60,718
Total stockholders' equity including shares held in treasury	434,393	390,816
Less: 1,188,385 shares as of June 30, 2014 and 1,170,129 shares as of December 31, 2013, held in treasury, at cost	-25,101	-24,642
Total stockholders' equity	409,292	366,174
Total liabilities and stockholders' equity	$494,273	$463,432

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 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	33,922,584	33,342,312
Common stock, shares outstanding	32,734,199	32,172,183
Treasury stock, shares	1,188,385	1,170,129

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]	'	'	'	'
Revenues	$119,738	$116,008	$241,535	$232,014
Cost of revenues (exclusive of depreciation and amortization)	81,259	73,930	156,181	146,843
Gross profit	38,479	42,078	85,354	85,171
Operating expenses:	'	'	'	'
General and administrative expenses	16,240	13,753	31,040	28,474
Selling and marketing expenses	9,463	9,136	19,695	18,891
Depreciation and amortization	6,679	6,362	13,035	12,874
Total operating expenses	32,382	29,251	63,770	60,239
Income from operations	6,097	12,827	21,584	24,932
Other income/(expense) :	'	'	'	'
Foreign exchange loss	-137	-569	-970	-618
Interest and other income, net	858	593	1,817	1,296
Income before income taxes	6,818	12,851	22,431	25,610
Income tax provision / (benefit)	-944	3,615	3,521	6,612
Net income	$7,762	$9,236	$18,910	$18,998
Earnings per share:	'	'	'	'
Basic	$0.24	$0.28	$0.58	$0.58
Diluted	$0.23	$0.27	$0.56	$0.56
Weighted-average number of shares used in computing earnings per share:	'	'	'	'
Basic	32,812,155	32,778,800	32,668,620	32,650,852
Diluted	33,673,669	33,899,097	33,551,904	33,810,156

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income/(Loss) (USD $)	3 Months Ended				6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]	'		'		'		'
Net income	$7,762		$9,236		$18,910		$18,998
Other comprehensive income/(loss):	'		'		'		'
Unrealized income/(loss) on effective cash flow hedges, net of taxes $578, ($2,315), $2,186 and ($1,689), respectively	1,964		-8,734		7,366		-7,287
Foreign currency translation adjustment	24		-15,297		4,812		-13,606
Reclassification adjustments	'		'		'		'
Realized loss on cash flow hedges, net of taxes $485, $361, $980 and $789	1,720	[1]	783	[1]	3,478	[1]	1,709	[1]
Retirement benefits, net of taxes $7, $9, $15 and $17, respectively	26	[2]	27	[2]	55	[2]	57	[2]
Total other comprehensive income/(loss)	3,734		-23,221		15,711		-19,127
Total comprehensive income/(loss)	$11,496		($13,985)		$34,621		($129)
[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		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Taxes on unrealized income/(loss) on cash flow hedges	$578	($2,315)	$2,186	($1,689)
Taxes on realized loss on cash flow hedges	485	361	980	789
Retirement benefits, taxes	$7	$9	$15	$17

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flow (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Net income	$18,910	$18,998
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	13,035	12,874
Stock-based compensation expense	6,142	6,505
Amortization of deferred financing costs	53	76
Unrealized foreign exchange gain/(loss)	2,206	-4,788
Deferred income taxes	2,709	2,373
Gain on sale of fixed assets	-61	'
Non-controlling interest	'	2
Change in operating assets and liabilities:	'	'
Restricted cash	-291	44
Accounts receivable	2,472	-3,896
Prepaid expenses and other current assets	-2,008	-2,389
Accounts payable	419	-1,283
Deferred revenue	1,035	46
Accrued employee cost	-4,940	-6,599
Accrued expenses and other liabilities	-3,959	2,882
Advance income tax, net	-6,263	489
Other assets	-1,706	67
Net cash provided by operating activities	27,753	25,401
Cash flows from investing activities:	'	'
Purchase of fixed assets	-16,637	-10,281
Business acquisition (net of cash acquired)	'	-1,183
Purchase of short-term investments	-1,408	-166
Proceeds from redemption of short-term investments	'	281
Net cash used for investing activities	-18,045	-11,349
Cash flows from financing activities:	'	'
Principal payments on capital lease obligations	-564	-787
Acquisition of treasury stock	-459	-389
Proceeds from exercise of stock options	2,813	2,456
Net cash provided by financing activities	1,790	1,280
Effect of exchange rate changes on cash and cash equivalents	1,374	-3,800
Net increase in cash and cash equivalents	12,872	11,532
Cash and cash equivalents, beginning of period	148,065	103,037
Cash and cash equivalents, end of period	$160,937	$114,569

Organization_and_Basis_of_Pres

Organization and Basis of Presentation	6 Months Ended
	Jun. 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	6 Months Ended
	Jun. 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.
	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 impacts 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.
	Accrued expenses and other current liabilities
	Accrued expenses and other current liabilities consist of the following:
		June 30,		December 31,
		2014		2013
	Accrued expenses	$	22,460	$	20,607
	Derivative instruments		2,320		7,689
	Other current liabilities		4,942		3,923
	Accrued expenses and other current liabilities	$	29,722	$	32,219
	Non-current liabilities
	Non-current liabilities consist of the following:
		June 30,		December 31,
		2014		2013
	Derivative instruments	$	1,260	$	5,606
	Unrecognized tax benefits		2,839		4,776
	Deferred rent		5,905		4,973
	Retirement benefits		1,570		3,543
	Other non-current liabilities		2,811		914
	Non-current liabilities	$	14,385	$	19,812

Earnings_Per_Share

Earnings Per Share	6 Months Ended
	Jun. 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 June 30,				Six months ended June 30,
		2014		2013		2014		2013
	Numerators:
	Net income	$	7,762	$	9,236	$	18,910	$	18,998
	Denominators:
	Basic weighted average common shares outstanding		32,812,155		32,778,800		32,668,620		32,650,852
	Dilutive effect of share based awards		861,514		1,120,297		883,284		1,159,304
	Diluted weighted average common shares outstanding		33,673,669		33,899,097		33,551,904		33,810,156
	Earnings per share:
	Basic	$	0.24	$	0.28	$	0.58	$	0.58
	Diluted	$	0.23	$	0.27	$	0.56	$	0.56
	Weighted average common shares considered anti-dilutive in computing diluted earnings per share		179,450		150,902		192,669		253,810

Segment_Information

Segment Information	6 Months Ended
	Jun. 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.
	Revenues and cost of revenues for each of the three months ended June 30, 2014 and 2013 for the Company’s outsourcing services and transformation services segments, respectively, are as follows:
		Three months ended June 30, 2014							Three months ended June 30, 2013
		Outsourcing		Transformation		Total			Outsourcing		Transformation		Total
		Services		Services					Services		Services
	Revenues	$	94,314	$	25,424	$	119,738		$	97,328	$	18,680	$	116,008
	Cost of revenues (exclusive of depreciation and amortization)		62,494		18,765		81,259			59,483		14,447		73,930
	Gross profit	$	31,820	$	6,659	$	38,479		$	37,845	$	4,233	$	42,078
	Operating expenses						32,382							29,251
	Other income/(expense)						721							24
	Income tax provision						(944	)						3,615
	Net income					$	7,762						$	9,236
	Revenues and cost of revenues for each of the six months ended June 30, 2014 and 2013 for the Company’s outsourcing services and transformation services segments, respectively, are as follows:
		Six months ended June 30, 2014							Six months ended June 30, 2013
		Outsourcing		Transformation		Total			Outsourcing		Transformation		Total
		Services		Services					Services		Services
	Revenues	$	194,405	$	47,130	$	241,535		$	194,900	$	37,114	$	232,014
	Cost of revenues (exclusive of depreciation and amortization)		121,393		34,788		156,181			118,959		27,884		146,843
	Gross profit	$	73,012	$	12,342	$	85,354		$	75,941	$	9,230	$	85,171
	Operating expenses						63,770							60,239
	Other income/(expense)						847							678
	Income tax provision						3,521							6,612
	Net income					$	18,910						$	18,998

Business_Combinations_Goodwill

Business Combinations, Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Business Combinations, Goodwill and Intangible Assets	'
	5. Business Combinations, Goodwill and Intangible Assets
	Goodwill
	The following table sets forth details of the Company’s goodwill balance as of June 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
	Currency translation adjustments			713			—			713
	Balance at June 30, 2014		$	91,335		$	16,785		$	108,120
	-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 fiscal year ended December 31, 2013.
	Intangible Assets
	Information regarding the Company’s intangible assets is as follows:
			As of June 30, 2014
			Gross			Accumulated			Net Carrying
			Carrying			Amortization			Amount
			Amount
	Customer relationships		$	38,639		$	(14,393	)	$	24,246
	Leasehold benefits			3,067			(1,639	)		1,428
	Developed technology			6,013			(1,844	)		4,169
	Non-compete agreements			1,316			(1,316	)		—
	Trade names and trademarks			3,322			(2,018	)		1,304
			$	52,357		$	(21,210	)	$	31,147
			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 June 30, 2014 and 2013 was $1,489 and $1,596, respectively. Amortization expense for the six months ended June 30, 2014 and 2013 was $3,025 and $3,230, respectively. The weighted average life of intangible assets was 8.8 years for customer relationships, 6.8 years for leasehold benefits, 8.0 years for developed technology, 1.5 years for non-compete agreements and 3.5 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 June 30, 2014 and December 31, 2013.
	Estimated amortization of intangible assets during the year ending June 30,
	2015		$	5,554
	2016		$	5,554
	2017		$	5,547
	2018		$	5,459
	2019		$	5,400

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Jun. 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 June 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 June 30, 2014	Level 1		Level 2		Level 3		Total
	Assets
	Money market and mutual funds	$	111,478	$	—	$	—	$	111,478
	Derivative financial instruments		—		5,195		—		5,195
	Total	$	111,478	$	5,195	$	—	$	116,673
	Liabilities
	Derivative financial instruments	$	—	$	3,580	$	—	$	3,580
	Total	$	—	$	3,580	$	—	$	3,580
	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	6 Months Ended
	Jun. 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 (“fair value hedges”). 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 $298,135 and GBP 10,350 as of June 30, 2014 and $262,085 and GBP 10,973 as of December 31, 2013. The Company estimates that approximately $318 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 June 30, 2014. As of June 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 six months ended June 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
		June 30,				December 31,
		2014				2013
	Other current assets:
	Foreign currency exchange contracts	$	2,002			$	437
	Other assets:
	Foreign currency exchange contracts	$	3,153			$	423
	Accrued expenses and other current liabilities:
	Foreign currency exchange contracts	$	2,320			$	7,689
	Other non current liabilities:
	Foreign currency exchange contracts	$	1,260			$	5,606
	Derivatives not designated as hedging instruments:
		June 30,				December 31,
		2014				2013
	Other current assets:
	Foreign currency exchange contracts	$	40			$	97
	The following tables set forth the effect of foreign currency exchange contracts on the unaudited consolidated statements of income for the three months ended June 30, 2014 and 2013:
	Derivatives in Cash Flow	Amount of Gain/(Loss)								Location of	Amount of Gain/						Location of Gain/(Loss)	Amount of Gain/
	Hedging Relationships	Recognized in								Gain/(Loss)	(Loss) Reclassified from						Recognized in Income on	(Loss) Recognized in
		AOCI on Derivative								Reclassified from	AOCI into Income						Derivative	Income on Derivative
		(Effective Portion)								AOCI into Income	(Effective Portion)						(Ineffective Portion	(Ineffective Portion and
										(Effective Portion)							and Amount Excluded	Amount  Excluded from
																	from Effectiveness	Effectiveness Testing)
																	Testing)
		2014				2013					2014			2013				2014		2013
	Foreign exchange contracts	$	2,542			$	(11,049	)		Foreign exchange loss	$	(2,205	)	$	(1,144	)	Foreign exchange loss	$	—	$	—
				Amount of Gain/(Loss)
				Recognized in Income on
	Derivatives not designated	Location of Gain/(Loss)		Derivatives
	as Hedging Instruments	Recognized in Income on Derivatives		2014				2013
	Foreign exchange contracts	Foreign exchange loss		$	732			$	(4,837	)
	The following tables set forth the effect of foreign currency exchange contracts on the unaudited consolidated statements of income for the six months ended June 30, 2014 and 2013:
	Derivatives in Cash Flow	Amount of Gain/(Loss)								Location of	Amount of Gain/						Location of Gain/(Loss)	Amount of Gain/
	Hedging Relationships	Recognized in								Gain/(Loss)	(Loss) Reclassified from						Recognized in Income on	(Loss) Recognized in
		AOCI on Derivative								Reclassified from	AOCI into Income						Derivative	Income on Derivative
		(Effective Portion)								AOCI into Income	(Effective Portion)						(Ineffective Portion	(Ineffective Portion and
										(Effective Portion)							and Amount Excluded	Amount Excluded from
																	from Effectiveness	Effectiveness Testing)
																	Testing)
		2014				2013					2014			2013				2014		2013
	Foreign exchange contracts	$	9,552			$	(8,976	)		Foreign exchange loss	$	(4,458	)	$	(2,498	)	Foreign exchange loss	$	—	$	—
				Amount of Gain/(Loss)
				Recognized in Income on
	Derivatives not designated	Location of Gain or (Loss)		Derivatives
	as Hedging Instruments	Recognized in Income on Derivatives		2014				2013
	Foreign exchange contracts	Foreign exchange loss		$	3,451			$	(2,539	)

Fixed_Assets

Fixed Assets	6 Months Ended
	Jun. 30, 2014
Property Plant And Equipment [Abstract]	'
Fixed Assets	'
	8. Fixed Assets
	Fixed assets consist of the following:
		June 30,			December 31,
		2014			2013
	Owned Assets:
	Network equipment, computers and software	$	79,533		$	63,428
	Buildings		1,322			1,287
	Land		865			842
	Leasehold improvements		26,195			24,382
	Office furniture and equipment		12,730			11,111
	Motor vehicles		603			507
	Capital work in progress		4,174			715
			125,422			102,272
	Less: Accumulated depreciation and amortization		(80,553	)		(69,242	)
		$	44,869		$	33,030
	Assets under capital leases:
	Network equipment, computers and software	$	—		$	184
	Leasehold improvements		2,003			1,955
	Office furniture and equipment		995			1,079
	Motor vehicles		875			934
			3,873			4,152
	Less: Accumulated depreciation and amortization		(2,764	)		(2,618	)
		$	1,109		$	1,534
	Fixed assets, net	$	45,978		$	34,564
	Depreciation and amortization expense excluding amortization of acquisition-related intangibles for the three months ended June 30, 2014 and 2013 was $5,190 and $4,766, respectively, and $10,010 and $9,644 for the six months ended June 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	6 Months Ended
	Jun. 30, 2014
Text Block [Abstract]	'
Capital Structure	'
	9. Capital Structure
	The Company has one class of common stock outstanding.
	During the three months ended June 30, 2014 and June 30, 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 six months ended June 30, 2014 and June 30, 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.

Employee_Benefit_Plans

Employee Benefit Plans	6 Months Ended
	Jun. 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 on retirement or on 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 June 30,						Six months ended June 30,
		2014			2013			2014			2013
	Service cost	$	350		$	293		$	728		$	601
	Interest cost		121			115			260			236
	Expected return on plan assets		(44	)		(42	)		(87	)		(87	)
	Actuarial loss		33			36			70			74
	Net gratuity cost	$	460		$	402		$	971		$	824
	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% on these gratuity plans for the year ended March 31, 2014.
	Change in Plan Assets
	Plan assets at January 1, 2014	$	2,156
	Actual return		99
	Actuarial gain		—
	Effect of exchange rate changes		59
	Plan assets at June 30, 2014	$	2,314
	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 $342 and $354 during the three month periods ended June 30, 2014 and June 30, 2013, respectively, and $845 and $973 during the six month periods ended June 30, 2014 and June 30, 2013, respectively.
	During the three and six month periods ended June 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, Malaysia and the Czech Republic:
	Three months ended June 30, 2014	$	1,463
	Three months ended June 30, 2013	$	1,413
	Six months ended June 30, 2014	$	2,861
	Six months ended June 30, 2013	$	2,860

Leases

Leases	6 Months Ended
	Jun. 30, 2014
Leases [Abstract]	'
Leases	'
	11. Leases
	The Company finances its use of certain computer hardware, 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 June 30, 2014 are as follows:
	Year ending June 30,
	2015	$	1,207
	2016		894
	2017		137
	2018		8
	Total minimum lease payments		2,246
	Less: amount representing interest		211
	Present value of minimum lease payments		2,035
	Less: current portion		1,058
	Long term capital lease obligation	$	977
	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 June 30, 2014 are set forth below:
	Year ending June 30,
	2015	$	9,959
	2016		8,518
	2017		2,771
	2018		1,730
	2019		1,517
	2020 and thereafter		254
		$	24,749
	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 $4,775 and $4,448 for the three months ended June 30, 2014 and 2013, respectively, and $9,256 and $8,785 for the six months ended June 30, 2014 and 2013, respectively. Deferred rent as of June 30, 2014 and December 31, 2013 was $6,431 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	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	12. Income Taxes
	The Company determines the tax provision for interim periods using an estimate of 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 the annual effective tax rate, and if its estimated tax rate changes, the Company makes a cumulative adjustment.
	The Company recorded an income tax benefit of $944 and an income tax expense of $3,615 for the three months ended June 30, 2014 and 2013, respectively. Income tax expense for the six months ended June 30, 2014 and 2013 was $3,521 and $6,612, respectively. The effective rate of taxes decreased from 28.1% during the three months ended June 30, 2013 to a negative 13.8% during the three months ended June 30, 2014. The effective rate of taxes decreased from 25.8% during the six months ended June 30, 2013 to 15.7% during the six months ended June 30, 2014. The decrease in effective tax rate was primarily due to reversal of an unrecognized tax benefit of $2,173 and lower income in the U.S. due to reimbursement of disentanglement costs to The Travelers Indemnity Company (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 June 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		105
	Balance as of June 30, 2014	$	2,845
	The unrecognized tax benefits as of June 30, 2014 of $2,845, if recognized, would impact the effective tax rate.
	During the three months ended June 30, 2014 and June 30, 2013, the Company has recognized interest of $55 and $56 respectively, which is included in the income tax provision in the unaudited consolidated statements of income. As of June 30, 2014 and December 31, 2013, the Company has accrued approximately $994 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	6 Months Ended
	Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased 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 June 30,						Six months ended June 30,
			2014			2013			2014			2013
	Cost of revenue		$	447		$	529		$	1,460		$	1,398
	General and administrative expenses			787			1,265			2,301			2,816
	Selling and marketing expenses			733			1,066			2,381			2,291
	Total		$	1,967		$	2,860		$	6,142		$	6,505
	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:
			Six months ended June 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			Intrinsic			Average
						Exercise 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			(185,362	)		15.18
	Forfeited/Expired			(77,750	)		24.72
	Outstanding at June 30, 2014			1,703,197		$	16.04		$	23,136			5.05
	Vested and exercisable at June 30, 2014			1,360,044		$	14.6		$	20,195			4.52
	Available for grant at June 30, 2014			1,472,884
	The unrecognized compensation cost for unvested options as of June 30, 2014 was $1,448, which is expected to be expensed over a weighted average period of 1.38 years. The Company did not issue any options during the three months ended June 30, 2014 and 2013. The weighted-average fair value of options granted during the six months ended June 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 June 30, 2014 and 2013 was $33 and $205, respectively. The total grant date fair value of options vested during the six months ended June 30, 2014 and 2013 was $1,224 and $2,324 respectively.
	Restricted Stock Units
	Restricted stock and restricted stock unit activity under the Company’s stock plans is shown below:
			Restricted Stock Units
			Number			Weighted-Avg Fair Value
	Outstanding at December 31, 2013*			1,144,442		$	24.95
	Granted			427,087			25.75
	Vested			(406,910	)		21.81
	Forfeited			(103,316	)		26.4
	Outstanding at June 30, 2014*			1,061,303		$	26.36
	*	Excludes 124,000 and 112,000 vested restricted stock units as of June 30, 2014 and December 31, 2013, respectively, for which the underlying common stock is yet to be issued.
	As of June 30, 2014, unrecognized compensation cost of $22,831 is expected to be expensed over a weighted average period of 2.66 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 Fair			Number			Weighted Avg
						Value						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 June 30, 2014			47,725		$	25.63			47,725		$	33.6
	As of June 30, 2014, unrecognized compensation cost of $2,509 was expected to be expensed over a weighted average period of 2.51 years.

Geographical_Information

Geographical Information	6 Months Ended
	Jun. 30, 2014
Text Block [Abstract]	'
Geographical Information	'
	14. Geographical Information
		Three months ended June 30,				Six months ended June 30,
		2014		2013		2014		2013
	Revenues
	United States	$	87,888	$	84,638	$	178,301	$	167,774
	United Kingdom		24,734		23,088		48,155		47,186
	Rest of World		7,116		8,282		15,079		17,054
		$	119,738	$	116,008	$	241,535	$	232,014
		June 30,		December 31,
		2014		2013
	Fixed assets, net
	India	$	27,820	$	21,433
	United States		5,562		3,981
	Philippines		11,915		8,409
	Rest of World		681		741
		$	45,978	$	34,564

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	15. Commitments and Contingencies
	Fixed Asset Commitments
	As of June 30, 2014, the Company had committed to spend approximately $7,374 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 June 30, 2014 and December 31, 2013 is $18,694 and $14,742, respectively, of which the Company has already made payments or provided bank guarantees to the extent of $15,420 and $13,797, respectively. Amounts paid as deposits in respect of such assessments aggregating to $13,218 and $11,653 as of June 30, 2014 and December 31, 2013, respectively, are included in “Other assets” and amounts deposited for bank guarantees aggregating to $2,202 and $2,144 as of June 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 June 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	6 Months Ended
	Jun. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Event	'
	16. Subsequent Event
	Acquisition of Blue Slate Solutions, LLC
	On July 1, 2014, the Company entered into a membership interest purchase agreement (the “Agreement”) with Blue Slate Ventures, LLC (“Blue Slate”), a provider of Business Process Management (BPM) 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 $6,235, subject to final working capital adjustments. The Company will also issue its 46,950 restricted stock units to the key members of the Blue Slate, who will accept the employment with the Company upon combination.

Organization_and_Basis_of_Pres1

Organization and Basis of Presentation (Policies)	6 Months Ended
	Jun. 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.
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 impacts 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.
Business Combinations, Goodwill and Intangible Assets	'
	Goodwill
	The following table sets forth details of the Company’s goodwill balance as of June 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
	Currency translation adjustments			713			—			713
	Balance at June 30, 2014		$	91,335		$	16,785		$	108,120
	-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 fiscal year ended December 31, 2013.
	Intangible Assets
	Information regarding the Company’s intangible assets is as follows:
			As of June 30, 2014
			Gross			Accumulated			Net Carrying
			Carrying			Amortization			Amount
			Amount
	Customer relationships		$	38,639		$	(14,393	)	$	24,246
	Leasehold benefits			3,067			(1,639	)		1,428
	Developed technology			6,013			(1,844	)		4,169
	Non-compete agreements			1,316			(1,316	)		—
	Trade names and trademarks			3,322			(2,018	)		1,304
			$	52,357		$	(21,210	)	$	31,147
			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 June 30, 2014 and 2013 was $1,489 and $1,596, respectively. Amortization expense for the six months ended June 30, 2014 and 2013 was $3,025 and $3,230, respectively. The weighted average life of intangible assets was 8.8 years for customer relationships, 6.8 years for leasehold benefits, 8.0 years for developed technology, 1.5 years for non-compete agreements and 3.5 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 June 30, 2014 and December 31, 2013.
	Estimated amortization of intangible assets during the year ending June 30,
	2015		$	5,554
	2016		$	5,554
	2017		$	5,547
	2018		$	5,459
	2019		$	5,400

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Summary of Accrued Expenses and Other Current Liabilities	'
	Accrued expenses and other current liabilities consist of the following:
		June 30,		December 31,
		2014		2013
	Accrued expenses	$	22,460	$	20,607
	Derivative instruments		2,320		7,689
	Other current liabilities		4,942		3,923
	Accrued expenses and other current liabilities	$	29,722	$	32,219
Summary of Non-current Liabilities	'
	Non-current liabilities consist of the following:
		June 30,		December 31,
		2014		2013
	Derivative instruments	$	1,260	$	5,606
	Unrecognized tax benefits		2,839		4,776
	Deferred rent		5,905		4,973
	Retirement benefits		1,570		3,543
	Other non-current liabilities		2,811		914
	Non-current liabilities	$	14,385	$	19,812

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	6 Months Ended
	Jun. 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 June 30,				Six months ended June 30,
		2014		2013		2014		2013
	Numerators:
	Net income	$	7,762	$	9,236	$	18,910	$	18,998
	Denominators:
	Basic weighted average common shares outstanding		32,812,155		32,778,800		32,668,620		32,650,852
	Dilutive effect of share based awards		861,514		1,120,297		883,284		1,159,304
	Diluted weighted average common shares outstanding		33,673,669		33,899,097		33,551,904		33,810,156
	Earnings per share:
	Basic	$	0.24	$	0.28	$	0.58	$	0.58
	Diluted	$	0.23	$	0.27	$	0.56	$	0.56
	Weighted average common shares considered anti-dilutive in computing diluted earnings per share		179,450		150,902		192,669		253,810

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Jun. 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 June 30, 2014 and 2013 for the Company’s outsourcing services and transformation services segments, respectively, are as follows:
		Three months ended June 30, 2014							Three months ended June 30, 2013
		Outsourcing		Transformation		Total			Outsourcing		Transformation		Total
		Services		Services					Services		Services
	Revenues	$	94,314	$	25,424	$	119,738		$	97,328	$	18,680	$	116,008
	Cost of revenues (exclusive of depreciation and amortization)		62,494		18,765		81,259			59,483		14,447		73,930
	Gross profit	$	31,820	$	6,659	$	38,479		$	37,845	$	4,233	$	42,078
	Operating expenses						32,382							29,251
	Other income/(expense)						721							24
	Income tax provision						(944	)						3,615
	Net income					$	7,762						$	9,236
	Revenues and cost of revenues for each of the six months ended June 30, 2014 and 2013 for the Company’s outsourcing services and transformation services segments, respectively, are as follows:
		Six months ended June 30, 2014							Six months ended June 30, 2013
		Outsourcing		Transformation		Total			Outsourcing		Transformation		Total
		Services		Services					Services		Services
	Revenues	$	194,405	$	47,130	$	241,535		$	194,900	$	37,114	$	232,014
	Cost of revenues (exclusive of depreciation and amortization)		121,393		34,788		156,181			118,959		27,884		146,843
	Gross profit	$	73,012	$	12,342	$	85,354		$	75,941	$	9,230	$	85,171
	Operating expenses						63,770							60,239
	Other income/(expense)						847							678
	Income tax provision						3,521							6,612
	Net income					$	18,910						$	18,998

Business_Combinations_Goodwill1

Business Combinations, Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Summary of Company's Goodwill	'
	The following table sets forth details of the Company’s goodwill balance as of June 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
	Currency translation adjustments			713			—			713
	Balance at June 30, 2014		$	91,335		$	16,785		$	108,120
	-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 fiscal year ended December 31, 2013.
Summary of Company's Intangible Assets	'
	Information regarding the Company’s intangible assets is as follows:
			As of June 30, 2014
			Gross			Accumulated			Net Carrying
			Carrying			Amortization			Amount
			Amount
	Customer relationships		$	38,639		$	(14,393	)	$	24,246
	Leasehold benefits			3,067			(1,639	)		1,428
	Developed technology			6,013			(1,844	)		4,169
	Non-compete agreements			1,316			(1,316	)		—
	Trade names and trademarks			3,322			(2,018	)		1,304
			$	52,357		$	(21,210	)	$	31,147
			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 June 30,
	2015		$	5,554
	2016		$	5,554
	2017		$	5,547
	2018		$	5,459
	2019		$	5,400

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 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 June 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 June 30, 2014	Level 1		Level 2		Level 3		Total
	Assets
	Money market and mutual funds	$	111,478	$	—	$	—	$	111,478
	Derivative financial instruments		—		5,195		—		5,195
	Total	$	111,478	$	5,195	$	—	$	116,673
	Liabilities
	Derivative financial instruments	$	—	$	3,580	$	—	$	3,580
	Total	$	—	$	3,580	$	—	$	3,580
	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)	6 Months Ended
	Jun. 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
		June 30,				December 31,
		2014				2013
	Other current assets:
	Foreign currency exchange contracts	$	2,002			$	437
	Other assets:
	Foreign currency exchange contracts	$	3,153			$	423
	Accrued expenses and other current liabilities:
	Foreign currency exchange contracts	$	2,320			$	7,689
	Other non current liabilities:
	Foreign currency exchange contracts	$	1,260			$	5,606
	Derivatives not designated as hedging instruments:
		June 30,				December 31,
		2014				2013
	Other current assets:
	Foreign currency exchange contracts	$	40			$	97
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 June 30, 2014 and 2013:
	Derivatives in Cash Flow	Amount of Gain/(Loss)								Location of	Amount of Gain/						Location of Gain/(Loss)	Amount of Gain/
	Hedging Relationships	Recognized in								Gain/(Loss)	(Loss) Reclassified from						Recognized in Income on	(Loss) Recognized in
		AOCI on Derivative								Reclassified from	AOCI into Income						Derivative	Income on Derivative
		(Effective Portion)								AOCI into Income	(Effective Portion)						(Ineffective Portion	(Ineffective Portion and
										(Effective Portion)							and Amount Excluded	Amount  Excluded from
																	from Effectiveness	Effectiveness Testing)
																	Testing)
		2014				2013					2014			2013				2014		2013
	Foreign exchange contracts	$	2,542			$	(11,049	)		Foreign exchange loss	$	(2,205	)	$	(1,144	)	Foreign exchange loss	$	—	$	—
				Amount of Gain/(Loss)
				Recognized in Income on
	Derivatives not designated	Location of Gain/(Loss)		Derivatives
	as Hedging Instruments	Recognized in Income on Derivatives		2014				2013
	Foreign exchange contracts	Foreign exchange loss		$	732			$	(4,837	)
	The following tables set forth the effect of foreign currency exchange contracts on the unaudited consolidated statements of income for the six months ended June 30, 2014 and 2013:
	Derivatives in Cash Flow	Amount of Gain/(Loss)								Location of	Amount of Gain/						Location of Gain/(Loss)	Amount of Gain/
	Hedging Relationships	Recognized in								Gain/(Loss)	(Loss) Reclassified from						Recognized in Income on	(Loss) Recognized in
		AOCI on Derivative								Reclassified from	AOCI into Income						Derivative	Income on Derivative
		(Effective Portion)								AOCI into Income	(Effective Portion)						(Ineffective Portion	(Ineffective Portion and
										(Effective Portion)							and Amount Excluded	Amount Excluded from
																	from Effectiveness	Effectiveness Testing)
																	Testing)
		2014				2013					2014			2013				2014		2013
	Foreign exchange contracts	$	9,552			$	(8,976	)		Foreign exchange loss	$	(4,458	)	$	(2,498	)	Foreign exchange loss	$	—	$	—
				Amount of Gain/(Loss)
				Recognized in Income on
	Derivatives not designated	Location of Gain or (Loss)		Derivatives
	as Hedging Instruments	Recognized in Income on Derivatives		2014				2013
	Foreign exchange contracts	Foreign exchange loss		$	3,451			$	(2,539	)

Fixed_Assets_Tables

Fixed Assets (Tables)	6 Months Ended
	Jun. 30, 2014
Property Plant And Equipment [Abstract]	'
Schedule of Fixed Assets	'
	Fixed assets consist of the following:
		June 30,			December 31,
		2014			2013
	Owned Assets:
	Network equipment, computers and software	$	79,533		$	63,428
	Buildings		1,322			1,287
	Land		865			842
	Leasehold improvements		26,195			24,382
	Office furniture and equipment		12,730			11,111
	Motor vehicles		603			507
	Capital work in progress		4,174			715
			125,422			102,272
	Less: Accumulated depreciation and amortization		(80,553	)		(69,242	)
		$	44,869		$	33,030
	Assets under capital leases:
	Network equipment, computers and software	$	—		$	184
	Leasehold improvements		2,003			1,955
	Office furniture and equipment		995			1,079
	Motor vehicles		875			934
			3,873			4,152
	Less: Accumulated depreciation and amortization		(2,764	)		(2,618	)
		$	1,109		$	1,534
	Fixed assets, net	$	45,978		$	34,564

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2014
Compensation And Retirement Disclosure [Abstract]	'
Net Gratuity Cost	'
	Net gratuity cost includes the following components:
		Three months ended June 30,						Six months ended June 30,
		2014			2013			2014			2013
	Service cost	$	350		$	293		$	728		$	601
	Interest cost		121			115			260			236
	Expected return on plan assets		(44	)		(42	)		(87	)		(87	)
	Actuarial loss		33			36			70			74
	Net gratuity cost	$	460		$	402		$	971		$	824
Change in Plan Assets	'
	Change in Plan Assets
	Plan assets at January 1, 2014	$	2,156
	Actual return		99
	Actuarial gain		—
	Effect of exchange rate changes		59
	Plan assets at June 30, 2014	$	2,314
Contribution to Various Defined Contribution Plans	'
	During the three and six month periods ended June 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, Malaysia and the Czech Republic:
	Three months ended June 30, 2014	$	1,463
	Three months ended June 30, 2013	$	1,413
	Six months ended June 30, 2014	$	2,861
	Six months ended June 30, 2013	$	2,860

Leases_Tables

Leases (Tables)	6 Months Ended
	Jun. 30, 2014
Leases [Abstract]	'
Future Minimum Lease Payments under Capital Leases	'
	Future minimum lease payments under these capital leases as of June 30, 2014 are as follows:
	Year ending June 30,
	2015	$	1,207
	2016		894
	2017		137
	2018		8
	Total minimum lease payments		2,246
	Less: amount representing interest		211
	Present value of minimum lease payments		2,035
	Less: current portion		1,058
	Long term capital lease obligation	$	977
Future Minimum Lease Payments under Non-Cancelable Operating Lease Agreements Expiring after June 30, 2014	'
	Future minimum lease payments under non-cancelable agreements expiring after June 30, 2014 are set forth below:
	Year ending June 30,
	2015	$	9,959
	2016		8,518
	2017		2,771
	2018		1,730
	2019		1,517
	2020 and thereafter		254
		$	24,749

Income_Taxes_Tables

Income Taxes (Tables)	6 Months Ended
	Jun. 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 June 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		105
	Balance as of June 30, 2014	$	2,845

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 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 June 30,						Six months ended June 30,
			2014			2013			2014			2013
	Cost of revenue		$	447		$	529		$	1,460		$	1,398
	General and administrative expenses			787			1,265			2,301			2,816
	Selling and marketing expenses			733			1,066			2,381			2,291
	Total		$	1,967		$	2,860		$	6,142		$	6,505
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:
			Six months ended June 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			Intrinsic			Average
						Exercise 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			(185,362	)		15.18
	Forfeited/Expired			(77,750	)		24.72
	Outstanding at June 30, 2014			1,703,197		$	16.04		$	23,136			5.05
	Vested and exercisable at June 30, 2014			1,360,044		$	14.6		$	20,195			4.52
	Available for grant at June 30, 2014			1,472,884
Restricted Stock Units [Member]	'
Stock Unit Activity Under Company's Stock Plans	'
	Restricted Stock Units
	Restricted stock and restricted stock unit activity under the Company’s stock plans is shown below:
			Restricted Stock Units
			Number			Weighted-Avg Fair Value
	Outstanding at December 31, 2013*			1,144,442		$	24.95
	Granted			427,087			25.75
	Vested			(406,910	)		21.81
	Forfeited			(103,316	)		26.4
	Outstanding at June 30, 2014*			1,061,303		$	26.36
	*	Excludes 124,000 and 112,000 vested restricted stock units as of June 30, 2014 and December 31, 2013, respectively, for which the underlying common stock is yet to be issued.
Performance Based Stock Awards [Member]	'
Stock Unit 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 Fair			Number			Weighted Avg
						Value						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 June 30, 2014			47,725		$	25.63			47,725		$	33.6

Geographical_Information_Table

Geographical Information (Tables)	6 Months Ended
	Jun. 30, 2014
Text Block [Abstract]	'
Revenues Based on Geographical Information	'
		Three months ended June 30,				Six months ended June 30,
		2014		2013		2014		2013
	Revenues
	United States	$	87,888	$	84,638	$	178,301	$	167,774
	United Kingdom		24,734		23,088		48,155		47,186
	Rest of World		7,116		8,282		15,079		17,054
		$	119,738	$	116,008	$	241,535	$	232,014
Fixed Assets, Net Based on Geographical Information	'
		June 30,		December 31,
		2014		2013
	Fixed assets, net
	India	$	27,820	$	21,433
	United States		5,562		3,981
	Philippines		11,915		8,409
	Rest of World		681		741
		$	45,978	$	34,564

Summary_of_Significant_Account2

Summary of Significant Accounting Policies - Summary of Accrued Expenses and Other Current Liabilities (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Payables And Accruals [Abstract]	'	'
Accrued expenses	$22,460	$20,607
Derivative instruments	2,320	7,689
Other current liabilities	4,942	3,923
Accrued expenses and other current liabilities	$29,722	$32,219

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Summary of Non-current Liabilities (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Summary of non-current liabilities	'	'
Derivative instruments	$1,260	$5,606
Unrecognized tax benefits	2,839	4,776
Deferred rent	5,905	4,973
Retirement benefits	1,570	3,543
Other non-current liabilities	2,811	914
Non-current liabilities	$14,385	$19,812

Earnings_Per_Share_Computation

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Numerators:	'	'	'	'
Net income	$7,762	$9,236	$18,910	$18,998
Denominators:	'	'	'	'
Basic weighted average common shares outstanding	32,812,155	32,778,800	32,668,620	32,650,852
Dilutive effect of share based awards	861,514	1,120,297	883,284	1,159,304
Diluted weighted average common shares outstanding	33,673,669	33,899,097	33,551,904	33,810,156
Earnings per share:	'	'	'	'
Basic	$0.24	$0.28	$0.58	$0.58
Diluted	$0.23	$0.27	$0.56	$0.56
Weighted average common shares considered anti-dilutive in computing diluted earnings per share	179,450	150,902	192,669	253,810

Segment_Information_Additional

Segment Information - Additional Information (Detail)	6 Months Ended
	Jun. 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		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues and cost of revenues for Company's outsourcing services and transformation services segments [Line Items]	'	'	'	'
Revenues	$119,738	$116,008	$241,535	$232,014
Cost of revenues (exclusive of depreciation and amortization)	81,259	73,930	156,181	146,843
Gross profit	38,479	42,078	85,354	85,171
Operating expenses	32,382	29,251	63,770	60,239
Other income/(expense)	721	24	847	678
Income tax provision	-944	3,615	3,521	6,612
Net income	7,762	9,236	18,910	18,998
Outsourcing Services [Member]	'	'	'	'
Revenues and cost of revenues for Company's outsourcing services and transformation services segments [Line Items]	'	'	'	'
Revenues	94,314	97,328	194,405	194,900
Cost of revenues (exclusive of depreciation and amortization)	62,494	59,483	121,393	118,959
Gross profit	31,820	37,845	73,012	75,941
Transformation Services [Member]	'	'	'	'
Revenues and cost of revenues for Company's outsourcing services and transformation services segments [Line Items]	'	'	'	'
Revenues	25,424	18,680	47,130	37,114
Cost of revenues (exclusive of depreciation and amortization)	18,765	14,447	34,788	27,884
Gross profit	$6,659	$4,233	$12,342	$9,230

Business_Combinations_Goodwill2

Business Combinations, Goodwill and Intangible Assets - Summary of Company's Goodwill (Detail) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Goodwill [Line Items]	'	'
Beginning Balance	$107,407	$110,948
Currency translation adjustments	713	-3,291
Allocation on sale of a business unit	'	-250
Ending Balance	108,120	107,407
Outsourcing Services [Member]	'	'
Goodwill [Line Items]	'	'
Beginning Balance	90,622	94,163
Currency translation adjustments	713	-3,291
Allocation on sale of a business unit	'	-250
Ending Balance	91,335	90,622
Transformation Services [Member]	'	'
Goodwill [Line Items]	'	'
Beginning Balance	16,785	16,785
Currency translation adjustments	'	'
Allocation on sale of a business unit	'	'
Ending Balance	$16,785	$16,785

Business_Combinations_Goodwill3

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

Business_Combinations_Goodwill4

Business Combinations, Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$52,357	$52,251
Accumulated Amortization	-21,210	-18,136
Net Carrying Amount	31,147	34,115
Customer Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	38,639	38,614
Accumulated Amortization	-14,393	-12,201
Net Carrying Amount	24,246	26,413
Leasehold Benefits [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	3,067	2,986
Accumulated Amortization	-1,639	-1,455
Net Carrying Amount	1,428	1,531
Developed Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	6,013	6,013
Accumulated Amortization	-1,844	-1,458
Net Carrying Amount	4,169	4,555
Non-compete Agreements [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	1,316	1,316
Accumulated Amortization	-1,316	-1,316
Net Carrying Amount	0	0
Trade Names and Trademarks [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	3,322	3,322
Accumulated Amortization	-2,018	-1,706
Net Carrying Amount	$1,304	$1,616

Business_Combinations_Goodwill5

Business Combinations, Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Amortization expense	$1,489	$1,596	$3,025	$3,230	'
Indefinite lived trade names and trademarks	$900	'	$900	'	$900
Customer Relationships [Member]	'	'	'	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Weighted average life of intangible assets	'	'	'8 years 9 months 18 days	'	'
Leasehold Benefits [Member]	'	'	'	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Weighted average life of intangible assets	'	'	'6 years 9 months 18 days	'	'
Developed Technology [Member]	'	'	'	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Weighted average life of intangible assets	'	'	'8 years	'	'
Non-compete Agreements [Member]	'	'	'	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Weighted average life of intangible assets	'	'	'1 year 6 months	'	'
Trade Names and Trademarks [Member]	'	'	'	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Weighted average life of intangible assets	'	'	'3 years 6 months	'	'

Business_Combinations_Goodwill6

Business Combinations, Goodwill and Intangible Assets - Estimated Amortization of Intangible Assets (Detail) (USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'
2015	$5,554
2016	5,554
2017	5,547
2018	5,459
2019	$5,400

Fair_Value_Measurements_Assets

Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Detail) (Fair Value, Measurements, Recurring [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Money market and mutual funds	$111,478	$116,662
Derivative financial instruments	5,195	957
Total	116,673	117,619
Liabilities	'	'
Derivative financial instruments	3,580	13,295
Total	3,580	13,295
Level 1 [Member]	'	'
Assets	'	'
Money market and mutual funds	111,478	116,662
Derivative financial instruments	0	0
Total	111,478	116,662
Liabilities	'	'
Derivative financial instruments	0	0
Total	0	0
Level 2 [Member]	'	'
Assets	'	'
Money market and mutual funds	0	0
Derivative financial instruments	5,195	957
Total	5,195	957
Liabilities	'	'
Derivative financial instruments	3,580	13,295
Total	$3,580	$13,295

Derivatives_and_Hedge_Accounti2

Derivatives and Hedge Accounting - Additional Information (Detail)	3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 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	'	'	'	$298,135	£ 10,350	$262,085	£ 10,973
Net derivative losses which could be reclassified into earnings within the next 12 months	'	318	'	'	'	'	'
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 $)	Jun. 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	$2,002	$437
Derivatives Designated as Hedging Instruments [Member] | Other Assets [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Asset	3,153	423
Derivatives Designated as Hedging Instruments [Member] | Accrued Expenses and Other Current Liabilities [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Liability	2,320	7,689
Derivatives Designated as Hedging Instruments [Member] | Other Non Current Liabilities [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Liability	1,260	5,606
Derivatives not Designated as Hedging Instruments [Member] | Other Current Assets [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Foreign currency exchange contracts, Asset	$40	$97

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		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 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)	$2,542	($11,049)	$9,552	($8,976)
Foreign Exchange Loss [Member] | Derivatives not Designated as Hedging Instruments [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Amount of Gain/(Loss) Recognized in Income on Derivatives	732	-4,837	3,451	-2,539
Foreign Exchange 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 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)	($2,205)	($1,144)	($4,458)	($2,498)

Fixed_Assets_Schedule_of_Fixed

Fixed Assets - Schedule of Fixed Assets (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Owned Assets:	'	'
Assets, Gross	$125,422	$102,272
Less: Accumulated depreciation and amortization	-80,553	-69,242
Owned Assets, net	44,869	33,030
Assets under capital leases:	'	'
Capital leased assets, Gross	3,873	4,152
Less: Accumulated depreciation and amortization	-2,764	-2,618
Assets under capital leases, net	1,109	1,534
Fixed assets, net	45,978	34,564
Network Equipment, Computers and Software [Member]	'	'
Owned Assets:	'	'
Assets, Gross	79,533	63,428
Assets under capital leases:	'	'
Capital leased assets, Gross	'	184
Buildings [Member]	'	'
Owned Assets:	'	'
Assets, Gross	1,322	1,287
Land [Member]	'	'
Owned Assets:	'	'
Assets, Gross	865	842
Leasehold Improvements [Member]	'	'
Owned Assets:	'	'
Assets, Gross	26,195	24,382
Assets under capital leases:	'	'
Capital leased assets, Gross	2,003	1,955
Office Furniture and Equipment [Member]	'	'
Owned Assets:	'	'
Assets, Gross	12,730	11,111
Assets under capital leases:	'	'
Capital leased assets, Gross	995	1,079
Motor Vehicles [Member]	'	'
Owned Assets:	'	'
Assets, Gross	603	507
Assets under capital leases:	'	'
Capital leased assets, Gross	875	934
Capital Work in Progress [Member]	'	'
Owned Assets:	'	'
Assets, Gross	$4,174	$715

Fixed_Assets_Additional_Inform

Fixed Assets - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Property Plant And Equipment [Abstract]	'	'	'	'
Depreciation and amortization expense	$5,190	$4,766	$10,010	$9,644

Capital_Structure_Additional_I

Capital Structure - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
			ClassOfCommonStock
Disclosure Of Compensation Related Costs Sharebased 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

Employee_Benefit_Plans_Net_Gra

Employee Benefit Plans - Net Gratuity Cost (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Compensation And Retirement Disclosure [Abstract]	'	'	'	'
Service cost	$350	$293	$728	$601
Interest cost	121	115	260	236
Expected return on plan assets	-44	-42	-87	-87
Actuarial loss	33	36	70	74
Net gratuity cost	$460	$402	$971	$824

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014
Compensation And Retirement Disclosure [Abstract]	'	'	'	'	'
Percentage of expected return on the gratuity plans	'	'	'	'	9.00%
Percentage of discretionary contributions, Maximum	3.00%	3.00%	3.00%	3.00%	'
Company's contribution to the 401(k) Plan	$342	$354	$845	$973	'

Employee_Benefit_Plans_Change_

Employee Benefit Plans - Change in Plan Assets (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014
Compensation And Retirement Disclosure [Abstract]	'
Plan assets at January 1, 2014	$2,156
Actual return	99
Actuarial gain	'
Effect of exchange rate changes	59
Plan assets at June 30, 2014	$2,314

Employee_Benefit_Plans_Contrib

Employee Benefit Plans - Contribution to Various Defined Contribution Plans (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Compensation And Retirement Disclosure [Abstract]	'	'	'	'
Contribution to various defined contribution plans	$1,463	$1,413	$2,861	$2,860

Leases_Future_Minimum_Lease_Pa

Leases - Future Minimum Lease Payments under Capital Leases (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Leases [Abstract]	'	'
2015	$1,207	'
2016	894	'
2017	137	'
2018	8	'
Total minimum lease payments	2,246	'
Less: amount representing interest	211	'
Present value of minimum lease payments	2,035	'
Less: current portion	1,058	1,119
Long term capital lease obligation	$977	$1,371

Leases_Future_Minimum_Lease_Pa1

Leases - Future Minimum Lease Payments under Non-Cancelable Operating Lease Agreements Expiring after June 30, 2014 (Detail) (USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified
Leases [Abstract]	'
2015	$9,959
2016	8,518
2017	2,771
2018	1,730
2019	1,517
2020 and thereafter	254
Total operating lease payments	$24,749

Leases_Additional_Information_

Leases - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Leases [Abstract]	'	'	'	'	'
Rent expense under both cancelable and non-cancelable operating leases	$4,775	$4,448	$9,256	$8,785	'
Deferred rent	$6,431	'	$6,431	'	$5,394

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'	'	'	'	'
Income tax expense	($944)	$3,615	$3,521	$6,612	'
Effective tax rates	-13.80%	28.10%	15.70%	25.80%	'
Unrecognized tax benefit	2,845	'	2,845	'	4,913
Recognized interest	55	56	'	'	'
Accrued interest on unrecognized tax benefits	$994	'	$994	'	$863

Income_Taxes_Summary_of_Activi

Income Taxes - Summary of Activity Related to Gross Unrecognized Tax Benefits (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 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
Increases related to current year tax positions	'
Decreases related to current year tax positions	'
Effect of exchange rate changes	105
Balance as of June 30, 2014	$2,845

StockBased_Compensation_Costs_

Stock-Based Compensation - Costs Related to Company's Stock-Based Compensation Plan (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expenses	$1,967	$2,860	$6,142	$6,505
Cost of Revenue [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expenses	447	529	1,460	1,398
General and Administrative Expenses [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expenses	787	1,265	2,301	2,816
Selling and Marketing Expenses [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expenses	$733	$1,066	$2,381	$2,291

StockBased_Compensation_Fair_V

Stock-Based Compensation - Fair Value of Each Stock Option Granted to Employees (Detail)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased 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		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 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	1,448	'	1,448	'
Expected weighted average period	'	'	'1 year 4 months 17 days	'
Weighted-average fair value of options granted	'	'	$9.77	$10.07
Total grant date fair value of option vested in period	33	205	1,224	2,324
Restricted Stock Units [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Unrecognized compensation cost for unvested Stock Units	22,831	'	22,831	'
Expected expensed over a weighted average period	'	'	'2 years 7 months 28 days	'
Performance Based Stock Awards [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Unrecognized compensation cost for unvested Stock Units	$2,509	'	$2,509	'
Expected expensed over a weighted average period	'	'	'2 years 6 months 4 days	'
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 $)	6 Months Ended	12 Months Ended
	Jun. 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	-185,362	'
Number of Options, Forfeited/Expired	-77,750	'
Number of Options, Outstanding, Ending Balance	1,703,197	1,956,515
Number of Options, Vested and exercisable at June 30, 2014	1,360,044	'
Number of Options, Available for grant at June 30, 2014	1,472,884	'
Weighted-Average Exercise Price, Outstanding, Beginning Balance	$16.25	'
Weighted-Average Exercise Price, Granted	$27.62	'
Weighted-Average Exercise Price, Exercised	$15.18	'
Weighted-Average Exercise Price, Forfeited/Expired	$24.72	'
Weighted-Average Exercise Price, Outstanding, Ending Balance	$16.04	$16.25
Weighted Average Exercise Price, Vested and exercisable	$14.60	'
Aggregate Intrinsic Value, Outstanding, Beginning Balance	$22,255	'
Aggregate Intrinsic Value, Outstanding, Ending Balance	23,136	22,255
Aggregate Intrinsic Value, Vested and exercisable at June 30, 2014	$20,195	'
Weighted-Average Remaining Contractual Life (Years), Outstanding	'5 years 18 days	'5 years 6 months 18 days
Weighted-Average Remaining Contractual Life (Years), Vested and exercisable at June 30, 2014	'4 years 6 months 7 days	'

StockBased_Compensation_Stock_1

Stock-Based Compensation - Stock Unit Activity Under Company's Stock Plans (Detail) (USD $)	6 Months Ended
	Jun. 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	427,087
Number, Vested	-406,910
Number, Forfeited	-103,316
Number, Outstanding, Ending Balance	1,061,303
Weighted-Average Fair Value, Outstanding, Beginning Balance	$24.95
Weighted-Average Fair Value, Granted	$25.75
Weighted-Average Fair Value, Vested	$21.81
Weighted-Average Fair Value, Forfeited	$26.40
Weighted-Average Fair Value, Outstanding, Ending Balance	$26.36
Revenue Based Performance Restricted Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number, Granted	55,475
Number, Forfeited	-7,750
Number, Outstanding, Ending Balance	47,725
Weighted-Average Fair Value, Granted	$25.63
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, Granted	55,475
Number, Forfeited	-7,750
Number, Outstanding, Ending Balance	47,725
Weighted-Average Fair Value, Granted	$33.60
Weighted-Average Fair Value, Forfeited	$33.60
Weighted-Average Fair Value, Outstanding, Ending Balance	$33.60

StockBased_Compensation_Stock_2

Stock-Based Compensation - Stock Unit Activity Under Company's Stock Plans (Parenthetical) (Detail) (Restricted Stock Units [Member])	Jun. 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	124,000	112,000

Geographical_Information_Reven

Geographical Information - Revenues Based on Geographical Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues	'	'	'	'
Revenues	$119,738	$116,008	$241,535	$232,014
United States [Member]	'	'	'	'
Revenues	'	'	'	'
Revenues	87,888	84,638	178,301	167,774
United Kingdom [Member]	'	'	'	'
Revenues	'	'	'	'
Revenues	24,734	23,088	48,155	47,186
Rest of World [Member]	'	'	'	'
Revenues	'	'	'	'
Revenues	$7,116	$8,282	$15,079	$17,054

Geographical_Information_Fixed

Geographical Information - Fixed Assets, Net Based on Geographical Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fixed assets, net	'	'
Total Fixed assets	$45,978	$34,564
India [Member]	'	'
Fixed assets, net	'	'
Total Fixed assets	27,820	21,433
United States [Member]	'	'
Fixed assets, net	'	'
Total Fixed assets	5,562	3,981
Philippines [Member]	'	'
Fixed assets, net	'	'
Total Fixed assets	11,915	8,409
Rest of World [Member]	'	'
Fixed assets, net	'	'
Total Fixed assets	$681	$741

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'	'
Purchase commitments, net of advances	$7,374	'
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	18,694	14,742
Deposited or Bank guarantees provided	15,420	13,797
Amounts paid as deposits in respect of contingencies	13,218	11,653
Bank guarantees issued	$2,202	$2,144

Subsequent_Event_Additional_In

Subsequent Event - Additional Information (Detail) (Subsequent Event [Member], Blue Slate Solutions, LLC [Member], USD $)	0 Months Ended
In Thousands, except Share data, unless otherwise specified	Jul. 01, 2014
Subsequent Event [Line Items]	'
Purchase of membership interests	$6,235
Restricted Stock Units [Member]	'
Subsequent Event [Line Items]	'
Issuance of restricted stock units	46,950