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
Sep. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Designated as Hedging Instrument [Member]      
Derivatives, Fair Value [Line Items]      
Derivative, Notional Amount $ 548,424 $ 514,365 $ 459,189
Not Designated as Hedging Instrument [Member]      
Derivatives, Fair Value [Line Items]      
Derivative, Notional Amount $ 477,843 $ 448,838 $ 287,825