Derivatives - Fair Value of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Designated as hedging instrument | Interest rate swap | Accrued expenses
Derivatives, Fair Value [Line Items]
Total Liability Derivatives		$ (896)
Designated as hedging instrument | Interest rate swap | Other long-term obligations
Derivatives, Fair Value [Line Items]
Total Liability Derivatives	$ (2,540)	(3,462)
Designated as hedging instrument | Foreign currency forward contracts | Other assets (long-term)
Derivatives, Fair Value [Line Items]
Fair value of derivative asset	236	424
Designated as hedging instrument | Foreign currency forward contracts | Prepaid expenses and other assets
Derivatives, Fair Value [Line Items]
Fair value of derivative asset	1,237	1,777
Designated as hedging instrument | Foreign currency forward contracts | Accrued expenses
Derivatives, Fair Value [Line Items]
Total Liability Derivatives	(1,779)	(5,281)
Designated as hedging instrument | Foreign currency forward contracts | Other long-term obligations
Derivatives, Fair Value [Line Items]
Total Liability Derivatives	(260)	(866)
Not designated as hedging instrument | Foreign currency forward contracts | Prepaid expenses and other assets
Derivatives, Fair Value [Line Items]
Fair value of derivative asset	966	877
Not designated as hedging instrument | Foreign currency forward contracts | Accrued expenses
Derivatives, Fair Value [Line Items]
Total Liability Derivatives	$ (1,054)	$ (2,120)