Derivatives and Hedge Accounting- Location of Gain or Loss Recognized (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Cost of revenues	$ 207,516	$ 158,821
General and administrative expenses	39,945	30,703
Selling and marketing expenses	24,170	18,235
Depreciation and amortization expense	13,602	12,101
Total before tax	47,266	40,925
Income tax expense relating to above	(11,202)	(8,958)
Net of tax	36,178	31,931
Foreign exchange gain/(loss), net	1,756	434
Gain on foreign currency exchange contracts | Foreign currency exchange contracts | Derivatives designated as hedging instruments: | Derivatives in cash flow hedging relationships
Derivative Instruments, Gain (Loss) [Line Items]
Cost of revenues	1,583	2,424
General and administrative expenses	294	252
Selling and marketing expenses	14	13
Depreciation and amortization expense	98	140
Total before tax	1,989	2,829
Income tax expense relating to above	(515)	(389)
Net of tax	1,474	2,440
Gain on foreign currency exchange contracts | Foreign currency exchange contracts | Derivatives not designated as hedging instruments | Fair value hedging
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange gain/(loss), net	$ (899)	$ 215