Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenues, net		$ 404,996	$ 346,782	$ 805,639	$ 675,990
Cost of revenues	[1]	253,220	221,207	504,689	428,723
Gross profit	[1]	151,776	125,575	300,950	247,267
Operating expenses:
General and administrative expenses		45,605	40,434	92,351	80,379
Selling and marketing expenses		28,238	23,985	57,731	48,155
Depreciation and amortization expense		13,122	14,075	26,609	27,677
Total operating expenses		86,965	78,494	176,691	156,211
Income from operations		64,811	47,081	124,259	91,056
Foreign exchange gain, net		324	1,423	429	3,179
Interest expense		(3,240)	(1,502)	(6,625)	(2,378)
Other income/(loss), net		2,661	(174)	5,816	2,237
Income before income tax expense and earnings from equity affiliates		64,556	46,828	123,879	94,094
Income tax expense		15,554	11,125	23,612	22,327
Income before earnings from equity affiliates		49,002	35,703	100,267	71,767
Gain from equity-method investment		66	143	132	257
Net income attributable to ExlService Holdings, Inc. stockholders		$ 49,068	$ 35,846	$ 100,399	$ 72,024
Earnings per share attributable to ExlService Holdings, Inc. stockholders:
Basic (in dollars per share)		$ 1.47	$ 1.07	$ 3.01	$ 2.15
Diluted (in dollars per share)		$ 1.46	$ 1.06	$ 2.97	$ 2.13
Weighted average number of shares used in computing earnings per share attributable to ExlService Holdings, Inc. stockholders:
Basic (in shares)		33,355,354	33,403,411	33,397,226	33,422,618
Diluted (in shares)		33,688,449	33,830,539	33,809,555	33,862,597

[1] Exclusive of depreciation and amortization expense.