Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenues, net		$ 361,351	$ 290,325	$ 1,037,341	$ 826,804
Cost of revenues	[1]	230,462	177,743	659,185	507,265
Gross profit	[1]	130,889	112,582	378,156	319,539
Operating expenses:
General and administrative expenses		42,519	36,167	122,898	103,369
Selling and marketing expenses		23,879	21,672	72,034	59,631
Depreciation and amortization expense		14,380	12,305	42,057	36,716
Total operating expenses		80,778	70,144	236,989	199,716
Income from operations		50,111	42,438	141,167	119,823
Foreign exchange gain, net		1,504	1,171	4,683	2,958
Interest expense		(2,442)	(1,810)	(4,820)	(6,804)
Other income, net		2,261	1,721	4,498	5,346
Loss on settlement of convertible notes		0	(12,845)	0	(12,845)
Income before income tax expense and earnings from equity affiliates		51,434	30,675	145,528	108,478
Income tax expense		12,447	4,196	34,774	22,019
Income before earnings from equity affiliates		38,987	26,479	110,754	86,459
Gain from equity-method investment		108	28	365	0
Net income attributable to ExlService Holdings, Inc. stockholders		$ 39,095	$ 26,507	$ 111,119	$ 86,459
Earnings per share attributable to ExlService Holdings, Inc. stockholders:
Basic (in dollars per share)		$ 1.18	$ 0.79	$ 3.33	$ 2.57
Diluted (in dollars per share)		$ 1.16	$ 0.77	$ 3.28	$ 2.52
Weighted-average number of shares used in computing earnings per share attributable to ExlService Holdings Inc. stockholders:
Basic (in shares)		33,237,833	33,449,311	33,360,346	33,583,791
Diluted (in shares)		33,777,749	34,305,893	33,833,637	34,336,950

[1] Exclusive of depreciation and amortization expense.