Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments and Risk Management (Balance Sheet Classification and Fair Value of Derivative Instruments) (Details)

v3.21.2
Financial Instruments and Risk Management (Balance Sheet Classification and Fair Value of Derivative Instruments) (Details) - Forward Contracts [Member] - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Not Designated as Hedging Instrument [Member] | Prepaid Expenses And Other Current Assets [Member]      
Derivatives, Fair Value [Line Items]      
Fair value of derivative assets $ 1,578 $ 1,650 $ 4,641
Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]      
Derivatives, Fair Value [Line Items]      
Fair value of derivative liabilities 1,830 2,268 524
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Prepaid Expenses And Other Current Assets [Member]      
Derivatives, Fair Value [Line Items]      
Fair value of derivative assets 1,850 947 10,839
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Other Noncurrent Assets [Member]      
Derivatives, Fair Value [Line Items]      
Fair value of derivative assets 6,772 1,126 6,775
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]      
Derivatives, Fair Value [Line Items]      
Fair value of derivative liabilities 7,351 7,573 80
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Other Long Term Liabilities [Member]      
Derivatives, Fair Value [Line Items]      
Fair value of derivative liabilities $ 2,396 $ 6,590 $ 0