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Financial Instruments and Risk Management (Effect and Classification of Derivative Instuments) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) recognized in other comprehensive income, net of tax $ 8,170 $ (6,398) $ 13,547 $ 4,617
Designated as Hedging Instrument [Member] | Cost of Sales | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) reclassified from accumulated other comprehensive income to income for the effective portion (3,257) 6,906 (2,833) 11,527
Designated as Hedging Instrument [Member] | Sales [Member] | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) reclassified from accumulated other comprehensive income to income for the effective portion (170) 80 (182) 123
Designated as Hedging Instrument [Member] | Other Non-Operating Income (Expense) [Member] | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Loss reclassified from accumulated other comprehensive income to income as a result of cash flow hedge discontinuance 345 60 451 1,177
Not Designated as Hedging Instrument [Member] | Other Non-Operating Income (Expense) [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) recognized in income $ 1,077 $ (1,795) $ 355 $ (465)