Financial Instruments (Fair Value of Derivative Instruments on Consolidated Balance Sheets) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other current assets | Cross-currency swaps
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 62	$ 9
Other current assets | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Asset derivatives	205	2,649
Other non-current assets | Cross-currency swaps
Derivatives, Fair Value [Line Items]
Asset derivatives	703	0
Accrued expenses and other current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Liability derivatives	(2,442)	(8,436)
Accrued expenses and other current liabilities | Cross-currency swaps
Derivatives, Fair Value [Line Items]
Liability derivatives	0	(67)
Accrued expenses and other current liabilities | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Liability derivatives	(1,572)	(630)
Other non-current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Liability derivatives	(1,764)	(16,258)
Other non-current liabilities | Cross-currency swaps
Derivatives, Fair Value [Line Items]
Liability derivatives	$ 0	$ (5,104)