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Income Tax (Provision For Income Taxes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Currently payable      
Federal $ 2,636 $ (505) $ 3,231
Deferred      
Federal 53 3,465 1,342
Effect of "Tax Cuts and Jobs Act"     2,000
State (330)   220
Income Tax Expense (Benefit), Total $ 2,359 $ 2,960 $ 6,793