Fair Value Measurement - Effect of Derivative Instruments on Consolidated Statements of Income for Derivatives Not Designated as Accounting Hedges (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amount of Gain (Loss) on Derivatives Recognized in Income (Loss)			$ 642	$ (2,038)
Foreign exchange contracts | Not Designated as Hedging Instrument | Cost of revenues
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amount of Gain (Loss) on Derivatives Recognized in Income (Loss)	$ 807	$ (640)	1,654	(1,525)
Foreign exchange contracts | Not Designated as Hedging Instrument | Other (income) expense
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amount of Gain (Loss) on Derivatives Recognized in Income (Loss)	63	0	286	0
Interest rate swaps | Not Designated as Hedging Instrument | Interest and other expense
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amount of Gain (Loss) on Derivatives Recognized in Income (Loss)	$ (1)	$ (2)	$ (7)	$ (1,026)