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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, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Taxes [Abstract]              
Federal         $ 5,607 $ 5,411 $ 5,060
State         218 263 242
Current income tax expense (benefit)         5,825 5,674 5,302
Deferred         142 240 (111)
Income taxes $ 1,273 $ 1,548 $ 1,515 $ 1,631 $ 5,967 $ 5,914 $ 5,191