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Income Taxes (Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Balance at January 1	$ 8,434
Additions based on tax positions related to the current year
Additions for tax positions of prior years		8,434
Reductions for tax positions of prior years	(8,434)
Settlements with taxing authorities
Lapses of applicable statutes of limitations
Balance at December 31		$ 8,434

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Amount of unrecognized tax benefits.

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