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Income Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Federal Current $ 22,943 $ 22,955 $ 19,749
Federal Deferred 1,551 2,841 2,915
Federal Total 24,494 25,796 22,664
State Current 2,243 3,103 624
State Deferred 308 63 2,116
State Total 2,551 3,166 2,740
Current income tax (benefit) expense 25,186 26,058 20,373
Deferred tax expense 1,859 2,904 5,031
Tax expense (benefit) $ 27,045 $ 28,962 $ 25,404