Fair Value Measurements and Derivative Instruments (Held-to-Maturity Securities and Derivative Instruments) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Time deposits	$ 20,000,000	$ 75,000,000
Total net derivative asset (liability)	5,273,000	(347,000)
Total derivative assets
Derivative [Line Items]
Total net derivative asset (liability)	5,577,000	3,776,000
Total derivative liabilities
Derivative [Line Items]
Total net derivative asset (liability)	(304,000)	(4,123,000)
Foreign exchange contracts | Derivatives designated as hedging instruments | Other current assets and prepayments
Derivative [Line Items]
Total net derivative asset (liability)	21,000	96,000
Foreign exchange contracts | Derivatives designated as hedging instruments | Accounts payable and accrued liabilities
Derivative [Line Items]
Total net derivative asset (liability)	(10,000)	(112,000)
Foreign exchange contracts | Derivatives not designated as hedging instruments | Other current assets and prepayments
Derivative [Line Items]
Total net derivative asset (liability)	2,453,000	3,680,000
Foreign exchange contracts | Derivatives not designated as hedging instruments | Accounts payable and accrued liabilities
Derivative [Line Items]
Total net derivative asset (liability)	(294,000)	(1,848,000)
Interest rate swaps
Derivative [Line Items]
Total notional amount of outstanding contracts	200,000,000	500,000,000
Interest rate swaps | Derivatives designated as hedging instruments | Other Assets And Liabilities
Derivative [Line Items]
Total net derivative asset (liability)	3,103,000	(2,163,000)
Cash Flow Hedging
Derivative [Line Items]
Total notional amount of outstanding contracts	$ 1,000,000	$ 8,000,000