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Income Taxes (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, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Current: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | $ 6,456 | $ 6,825 | $ 7,189
State |  |  |  |  |  |  |  |  | 941 | 1,290 | 1,191
Deferred: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 301 | (84) | (585)
State |  |  |  |  |  |  |  |  | 18 | (53) | (36)
Total income tax expense | $ 1,806 | $ 1,855 | $ 2,035 | $ 2,020 | $ 2,017 | $ 2,083 | $ 1,932 | $ 1,946 | $ 7,716 | $ 7,978 | $ 7,759

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