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Income Taxes (Reconciliation of unrecognized tax benefit) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Taxes [Abstract]      
Balance at beginning of year $ 875 $ 1,260 $ 2,040
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions 51 81 97
Unrecognized Tax Benefits, Increase Resulting from Settlements with Taxing Authorities 2,181 0 0
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations (439) (466) (877)
Balance at end of year $ 2,668 $ 875 $ 1,260