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Income Taxes (Schedule Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Beginning of year	$ 15,028	$ 9,360	$ 8,937
(Decrease) resulting from prior year tax position	(2,853)
Increase resulting from prior year tax position		5,855	0
Increase resulting from current year tax position	1,870	758	751
Settlements with taxing authorities	0	(736)	0
Lapsing of statutes of limitations	(3,186)	(209)	(328)
End of year	$ 10,859	$ 15,028	$ 9,360

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Amount of unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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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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