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Income Taxes - Schedule of Significant Components of Provision for Income Taxes for Continuing Operations (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Current [Abstract]      
Federal $ 9,332 $ 7,620 $ 6,502
State 1,564 1,281 1,192
Total current 10,896 8,901 7,694
Deferred [Abstract]      
Federal (5,233) 2,548 5,302
State 369 431 651
Total deferred (4,864) 2,979 5,953
Total income tax provision $ 6,032 $ 11,880 $ 13,647