Income Taxes - Schedule of Income Tax Exepnse (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 40,336	$ 26,741	$ 34,941
State	5,918	4,472	4,928
Total current	46,254	31,213	39,869
Deferred:
Federal	2,851	11,047	4,870
State	518	1,402	475
Total deferred	3,369	12,449	5,345
Total income tax expense	$ 49,623	$ 43,662	$ 45,214