Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2015	[1]	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Net revenue	$ 272,387		$ 279,765	$ 409,239	$ 250,910	$ 168,122	$ 173,483	$ 303,472	$ 167,141	$ 1,212,301	$ 812,218	$ 779,028
(Loss) income from operations	$ 7,508		$ 4,203	$ 55,044	$ (1,558)	$ (13,807)	$ 3,531	$ 57,333	$ (700)	$ 65,197	$ 46,357	$ 55,033
Basic net (loss) income per common share (in dollars per share)	$ 0.44		$ 0.24	$ 3.12	$ (0.09)	$ (0.81)	$ 0.21	$ 3.23	$ (0.04)	$ 3.75	$ 2.67	$ 3.12
Diluted net (loss) income per common share (in dollars per share)	$ 0.43		$ 0.24	$ 3.10	$ (0.09)	$ (0.81)	$ 0.20	$ 3.21	$ (0.04)	$ 3.71	$ 2.64	$ 3.06

[1] Refer to Note 12—Director and Employee Benefit Plans for discussion of an out of period adjustment during the fourth quarter of 2015.