Income Taxes (Schedule Of Uncertain Tax Position Liability And Liability For Interest And Penalties On Uncertain Tax Positions) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Beginning balance	$ 3,523	$ 3,889	$ 4,328
Increases related to current year tax positions	473	691	368
Decreases due to the lapsing of statutes of limitations	(1,703)	(880)	(467)
Decreases related to prior year tax positions	(238)	(154)
Decreases for foreign exchange differences		(22)
Increases for foreign exchange differences	99		16
Increases related to prior year tax positions	420		249
Decreases related to prior year tax positions		(1)
Decreases related to settlements			(605)
Ending balance	2,574	3,523	3,889
Beginning Balance	434	402	315
Accrual of interest and penalties	81	227	161
Decreases related to prior year tax positions	(254)	(195)	(74)
Ending Balance	$ 261	$ 434	$ 402

Unrecognized Tax Benefits, Income Tax Penalties and Interest Decreases Related to Prior Year Tax Positions

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Unrecognized Tax Benefits, Income Tax Penalties and Interest Increase During Period

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Unrecognized Tax Benefits, Increases Resulting From Prior Period Tax Positions, Reversal

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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