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Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Taxes [Abstract]              
Federal         $ 5,189 $ 5,607 $ 5,411
State         217 218 263
Current income tax expense (benefit)         5,406 5,825 5,674
Deferred         470 142 240
Income taxes $ 426 $ 1,850 $ 1,804 $ 1,796 $ 5,876 $ 5,967 $ 5,914