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Hedge Accounting (Schedule Of Derivative Instruments On The Balance Sheet At Fair Value) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Derivatives, Fair Value [Line Items]    
Derivative financial instruments - current portion $ 85 $ 181
Designated as Hedging Instrument [Member]    
Derivatives, Fair Value [Line Items]    
Total derivatives designated as heding instruments 902 208
Total derivatives designated as hedging instruments 85 181
Designated as Hedging Instrument [Member] | Other Current Assets [Member]    
Derivatives, Fair Value [Line Items]    
Derivative financial instruments - current portion 793 96
Designated as Hedging Instrument [Member] | Other Noncurrent Assets [Member]    
Derivatives, Fair Value [Line Items]    
Derivative financial instruments - non-current portion 109 112
Interest Rate Contracts [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Derivative financial instruments - current portion $ 85 $ 181