Income Taxes - Summary of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 11,917	$ 21,030	$ 19,045
State	2,173	4,095	5,381
Total	14,090	25,125	24,426
Deferred:
Federal	13,646	(12,708)	(4,172)
State	4,004	(2,559)	(894)
Total	17,650	(15,267)	(5,066)
Tax Provision	$ 31,740	$ 9,858	$ 19,360