Consolidated and Combined Statements of Changes in Equity - USD ($) $ in Thousands	Class A common stock	Class B common stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Parent Company Investment	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	Total
Balance at beginning of period at Dec. 31, 2012						$ 259,945	$ 163		$ 260,108
Changes in Equity
Net income (loss)						70,225			70,225
Net cash distributions to Parent						(73,503)			(73,503)
Equity-based compensation						48,539			48,539
Equity-based contributions to joint venture and global advisory board						2,481			2,481
Other comprehensive income (loss)							763		763
Other non-cash contributions						757			757
Balance at end of period at Dec. 31, 2013						308,444	926		309,370
Changes in Equity
Net income (loss)						29,768			29,768
Net cash distributions to Parent						(80,983)			(80,983)
Equity-based compensation						13,834			13,834
Equity-based contributions to joint venture and Parent's advisory board						1,223			1,223
Other comprehensive income (loss)							1		1
Pre-offering distribution to partners						(195,017)			(195,017)
Other non-cash distributions						(1,105)			(1,105)
Establishment of deferred tax asset related to reorganization				$ 3,261					3,261
Reorganization of equity structure	$ 77			12,475		(76,164)		$ 63,612
Reorganization of equity structure (in shares)	7,699,851
Issuance of common stock		$ 362		138					500
Issuance of common stock (in shares)		36,158,698
Balance at end of period at Apr. 21, 2014	$ 77	$ 362		15,874			927	63,612	80,852
Balance at end of the period (in shares) at Apr. 21, 2014	7,699,851	36,158,698
Balance at beginning of period at Dec. 31, 2013						$ 308,444	926		309,370
Changes in Equity
Net income (loss)									32,555
Balance at end of period at Dec. 31, 2014	$ 198	$ 316		136,896	$ (24,118)		85	61,008	174,385
Balance at end of the period (in shares) at Dec. 31, 2014	19,770,893	31,621,542
Balance at beginning of period at Apr. 21, 2014	$ 77	$ 362		15,874			927	63,612	80,852
Balance at beginning of the period (in shares) at Apr. 21, 2014	7,699,851	36,158,698
Changes in Equity
Net income (loss)					(3,012)			5,799	2,787
Equity-based compensation	$ 1			39,156				66,765	105,922
Equity-based compensation (in shares)	76,722
Equity-based contributions to joint venture and global advisory board				5,849				123	5,972
Other comprehensive income (loss)							(842)	(1,796)	(2,638)
Issuance of common stock	$ 75			162,032					162,107
Issuance of common stock (in shares)	7,483,442
Distributions of IPO proceeds to partners				(139,429)					(139,429)
Dividends and distributions				3,115	(21,106)			(58,242)	(76,233)
Initial establishment of deferred tax assets, net of amounts payable under tax receivable agreement				10,854					10,854
Increase in deferred tax asset related to IPO				1,302					1,302
Tax benefit related to settlement of appreciation units				4,308					4,308
Issuance of Class A common stock and acquisition of Class A partnership units in connection with secondary offering	$ 45	$ (45)		33,723				(13,012)	20,711
Issuance of Class A common stock and acquisition of Class A partnership units in connection with secondary offering (in shares)	4,511,058	(4,507,453)
Other		$ (1)		112				(2,241)	(2,130)
Other (in shares)	(180)	(29,703)
Balance at end of period at Dec. 31, 2014	$ 198	$ 316		136,896	(24,118)		85	61,008	174,385
Balance at end of the period (in shares) at Dec. 31, 2014	19,770,893	31,621,542
Changes in Equity
Net income (loss)					33,104			87,113	120,217
Equity-based compensation	$ 1			42,400				3,730	46,131
Equity-based compensation (in shares)	134,228	(5,412)
Other comprehensive income (loss)							23	76	99
Dividends and distributions				4,130	(24,324)			(60,715)	(80,909)
Other				1,122				(1,075)	47
Other (in shares)		(43,037)
Treasury Stock purchases			$ (7,616)						$ (7,616)
Treasury Stock purchases (in shares)			(263,622)						(263,622)
Class A Partnership Units and other equity purchased or converted into Class A Common Stock	$ 6	$ (4)		5,727				(1,093)	$ 4,636
Class A Partnership Units and other equity purchased or converted into Class A Common Stock (in shares)	631,619	(343,857)
Net excess tax benefit from equity-based compensation				428					428
Balance at end of period at Dec. 31, 2015	$ 205	$ 312	$ (7,616)	$ 190,703	$ (15,338)		$ 108	$ 89,044	$ 257,418
Balance at end of the period (in shares) at Dec. 31, 2015	20,536,740	31,229,236	(263,622)