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Income Taxes (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 |  |  |  |  |  |  |  |  | $ 31,679 | $ 17,004 | $ 16,474
State |  |  |  |  |  |  |  |  | 2,131 | 995 | 540
Total |  |  |  |  |  |  |  |  | 33,810 | 17,999 | 17,014
Deferred |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 10,480 | 12,625 | 8,649
State |  |  |  |  |  |  |  |  | 557 | 1,126 | 642
Total |  |  |  |  |  |  |  |  | 11,037 | 13,751 | 9,291
Total income tax expense | $ 11,461 | $ 11,706 | $ 11,154 | $ 10,526 | $ 10,149 | $ 7,742 | $ 6,842 | $ 7,017 | $ 44,847 | $ 31,750 | $ 26,305

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