Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments and Risk Management (Gross Notional Amount of Outstanding Derivatives) (Details)

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Financial Instruments and Risk Management (Gross Notional Amount of Outstanding Derivatives) (Details) - Foreign Exchange Forward [Member] - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Jun. 30, 2021
Designated as Hedging Instrument [Member]      
Derivatives, Fair Value [Line Items]      
Derivative, Notional Amount $ 542,879 $ 485,083 $ 530,840
Not Designated as Hedging Instrument [Member]      
Derivatives, Fair Value [Line Items]      
Derivative, Notional Amount $ 239,676 $ 267,982 $ 258,377