Derivative Financial Instruments (Schedule Of The Fair Values Of Derivative Instruments) (Details) - Cash flow hedging - Foreign currency forward contracts - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Derivatives Designated as Hedging Instruments | Prepaid expenses and other current assets
Asset Derivatives
Asset derivatives	$ 694	$ 3,945
Derivatives Designated as Hedging Instruments | Accrued expenses and other current liabilities
Liability Derivatives
Liability derivatives	1,358	75
Derivatives Not Designated as Hedging Instruments | Prepaid expenses and other current assets
Asset Derivatives
Asset derivatives	47	67
Derivatives Not Designated as Hedging Instruments | Accrued expenses and other current liabilities
Liability Derivatives
Liability derivatives	$ 173	$ 1,372