Condensed Consolidated Statement Stockholders' Deficit - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Additional Paid-in Capital	Retained Earnings	Non-controlling Interest	Class A common stock	Class B common stock	Class C common stock	Total
Balance at Dec. 31, 2016	$ (30,006)	$ 71	$ (114,397)	$ 189	$ 6		$ (144,137)
Balance (in shares) at Dec. 31, 2016				18,935,916	62,002,729	1
Increase (Decrease) in Members' Equity (Deficit)
Equity-based compensation	719						719
Redemption of LLC common units for Class A common stock	(150)		(16)				(166)
Redemption of LLC common units for Class A common stock (in shares)				10,000
Distributions to holders of LLC Units			(21,907)				(21,907)
Dividends		(2,903)					(2,903)
Establishment of liabilities under the Tax Receivable Agreement and related changes to deferred tax assets associated with that liability	(104)						(104)
Non-controlling interest adjustment	(539)		539
Net income		7,522	42,101	$ 49,623			49,623
Balance at Mar. 31, 2017	$ (29,780)	$ 4,690	$ (93,648)	$ 189	$ 6		$ (118,543)
Balance (in shares) at Mar. 31, 2017				18,946,000	62,002,729	1