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	$ 74,239	$ 544	$ (103,193)	$ 189	$ 6		$ (28,215)
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	(115)		(16)				(131)
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)
Deferred tax adjustments related to Tax Receivable Agreement	(104)						(104)
Non-controlling interest adjustment	(607)		538				(69)
Net income		7,453	41,988	$ 49,441			49,441
Balance at Mar. 31, 2017	$ 74,362	$ 5,094	$ (82,558)	$ 189	$ 6		$ (2,907)
Balance (in shares) at Mar. 31, 2017				18,946,000	62,002,729	1