Quarterly Data Unaudited (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended												12 Months Ended
	Sep. 19, 2014	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Data Unaudited
Revenues		$ 203,840	$ 199,536	$ 198,356	$ 182,809	$ 179,936	$ 90,528	$ 72,725	$ 67,083	$ 65,832	$ 74,950	$ 76,864	$ 72,607	$ 719,784	$ 361,823	$ 247,186
Less promotional allowances		(17,680)	(15,996)	(15,723)	(15,358)	(15,841)	(11,579)	(10,976)	(10,053)	(10,284)	(11,319)	(11,036)	(10,428)	(64,757)	(48,449)	(43,067)
Net Revenues		186,160	183,540	182,633	167,451	164,095	78,949	61,749	57,030	55,548	63,631	65,828	62,179
Operating expenses		171,464	161,610	160,430	154,766	156,755	72,943	56,054	53,726	54,528	57,283	57,301	55,448	648,270	339,478	224,560
Operating Income		13,281	24,092	23,059	12,084	6,450	2,778	6,775	1,552	1,035	7,092	10,500	6,025	$ 72,516	$ 17,555	$ 22,582
Net (loss) Income		$ 110,153	$ 5,399	$ 4,795	$ (6,164)	$ (10,834)	$ (4,064)	$ 2,909	$ (2,333)	$ 7,078	$ 3,184	$ 6,548	$ 2,087
Earnings Per Share, Basic [Abstract]
Basic net income per common share		$ 2.36	$ 0.12	$ 0.10	$ (0.13)
Weighted Average Number of Shares Outstanding, Basic		46,670,735	46,516,614	46,516,614	46,494,638									46,550,042	29,901,405	23,311,492
Weighted Average Number of Shares Outstanding, Diluted	0	47,227,127	46,763,589	46,657,618	46,494,638									47,008,980	29,901,405	23,311,492
Earnings Per Share, Diluted [Abstract]
Diluted net income per common share		$ 2.33	$ 0.12	$ 0.10	$ (0.13)									$ 2.43	$ (0.48)	$ 0.81
Weighted Average Number of Shares Outstanding, Diluted	0	47,227,127	46,763,589	46,657,618	46,494,638									47,008,980	29,901,405	23,311,492
Basic and diluted						$ (0.23)	$ (0.16)	$ 0.12	$ (0.10)	$ 0.30	$ 0.14	$ 0.28	$ 0.09	$ 2.43	$ (0.48)	$ 0.81
Weighted Average Number of Shares Outstanding, Basic and Diluted						46,441,249	26,075,022	23,311,492	23,311,492	23,311,492	23,311,492	23,311,492	23,311,492	46,550,042	29,901,405	23,311,492