Condensed Consolidated Statement Stockholders' and Members' Equity (Deficit) - USD ($) $ in Thousands	Member Unit	Members' Deficit	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, 2013		$ (379,521)							$ (379,521)
Balance (in shares) at Dec. 31, 2013	154,414
Increase (Decrease) in Members' Equity (Deficit)
Net income		123,626							123,626
Conversion of Series B note to equity		73,383							73,383
Members' distributions		(60,101)							(60,101)
Balance at Dec. 31, 2014		(242,613)							(242,613)
Balance (in shares) at Dec. 31, 2014	154,401
Increase (Decrease) in Members' Equity (Deficit)
Membership unit forfeited (in units)	(13)
Net income		178,530							178,530
Members' distributions		(230,777)							(230,777)
Balance at Dec. 31, 2015		(294,860)							(294,860)
Balance (in shares) at Dec. 31, 2015	155,559
Increase (Decrease) in Members' Equity (Deficit)
Membership units, issued (in shares)	1,158
Net income						$ 13,635			203,237
Net income prior to the Reorganization Transactions		189,602							189,602
Membership units redeemed prior to the Reorganization Transactions		(17,000)							(17,000)
Membership units redeemed prior to the Reorganization Transactions (in shares)	(1,763)
Members' distributions prior to the Reorganization Transactions		(197,922)							(197,922)
Non-cash distributions prior to the Reorganization Transactions		(38,838)							(38,838)
Equity-based compensation recognized prior to the Reorganization Transactions		949							949
Effect of the Reorganization Transactions		$ 358,069	$ (7,306)		$ (322,892)	$ 71	$ 6		27,948
Effect of the Reorganization Transactions (in shares)	(153,796)					7,064,000	62,003,000
Issuance of Class A common stock sold in initial public offering, net of underwriting discounts, commissions and offering costs			233,958			$ 118			234,076
Issuance of Class A common stock sold in initial public offering, net of underwriting discounts, commissions and offering costs (in shares)						11,872,000
Non-controlling interest adjustment for purchase of common units from CWGS, LLC with proceeds from initial public offering			(144,178)		234,486				90,308
Equity-based compensation recognized subsequent to Reorganization Transactions			648						648
Distributions to holders of LLC Units					(21,223)				(21,223)
Dividends subsequent to the Reorganization Transactions				$ (1,515)					(1,515)
Deferred tax adjustments related to Tax Receivable Agreement			(11,794)						(11,794)
Non-controlling interest adjustment			2,911		(5,140)				(2,229)
Net income subsequent to the Reorganization Transactions				2,059	11,576				13,635
Balance at Dec. 31, 2016			$ 74,239	$ 544	$ (103,193)	$ 189	$ 6		$ (28,215)
Balance (in shares) at Dec. 31, 2016						18,935,916	69,066,445	1