Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments (Schedule Of Contracts Designated As Hedged Instruments) (Details)

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Derivative Financial Instruments (Schedule Of Contracts Designated As Hedged Instruments) (Details) - Designated as Hedging Instrument [Member]
€ in Thousands, $ in Thousands
Jun. 30, 2021
CAD ($)
Jun. 30, 2021
EUR (€)
Dec. 31, 2020
CAD ($)
Dec. 31, 2020
EUR (€)
Canadian Dollars [Member]        
Foreign Exchange Contracts [Line Items]        
Foreign exchange contracts, Notional Amount | $ $ 9,692   $ 14,587  
Euro [Member]        
Foreign Exchange Contracts [Line Items]        
Foreign exchange contracts, Notional Amount | €   € 17,185   € 24,481