Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenues, net		$ 346,782	$ 275,064	$ 675,990	$ 536,479
Cost of revenues	[1]	221,207	170,701	428,723	329,522
Gross profit	[1]	125,575	104,363	247,267	206,957
Operating expenses:
General and administrative expenses		40,434	36,499	80,379	67,202
Selling and marketing expenses		23,985	19,724	48,155	37,959
Depreciation and amortization expense		14,075	12,310	27,677	24,411
Total operating expenses		78,494	68,533	156,211	129,572
Income from operations		47,081	35,830	91,056	77,385
Foreign exchange gain, net		1,423	1,353	3,179	1,787
Interest expense		(1,502)	(2,520)	(2,378)	(4,994)
Other income/(loss), net		(174)	2,215	2,237	3,625
Income before income tax expense and earnings from equity affiliates		46,828	36,878	94,094	77,803
Income tax expense		11,125	8,865	22,327	17,823
Income before earnings from equity affiliates		35,703	28,013	71,767	59,980
Gain/(loss) from equity-method investment		143	8	257	(28)
Net income attributable to ExlService Holdings, Inc. stockholders		$ 35,846	$ 28,021	$ 72,024	$ 59,952
Earnings per share attributable to ExlService Holdings, Inc. stockholders:
Basic (in dollars per share)		$ 1.07	$ 0.83	$ 2.15	$ 1.78
Diluted (in dollars per share)		$ 1.06	$ 0.81	$ 2.13	$ 1.75
Weighted-average number of shares used in computing earnings per share attributable to ExlService Holdings Inc. stockholders:
Basic (in shares)		33,403,411	33,571,074	33,422,618	33,652,146
Diluted (in shares)		33,830,539	34,389,768	33,862,597	34,353,593

[1] Exclusive of depreciation and amortization expense.