CONDENSED CONSOLIDATED STATEMENT OF EQUITY - 6 months ended Jun. 30, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Non-Controlling Interests
Beginning Balance at Dec. 31, 2016	$ 763,429	$ 328	$ 419,099	$ 277,659	$ 66,343
Beginning Balance (in shares) at Dec. 31, 2016		32,724
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10,955			8,954	2,001
Cash contributions from members of consolidated entities	51,291				51,291
Cash distributions to members of consolidated entities	(13,659)				(13,659)
Shares remitted to Company to satisfy employee tax obligations	(1,380)	$ 0	(1,380)
Shares remitted to Company to satisfy employee tax obligations (in shares)		(74)
Stock based compensation expense	3,215	$ 0	3,215
Stock based compensation expense (in shares)		455
Ending Balance at Jun. 30, 2017	$ 813,851	$ 328	$ 420,934	$ 286,613	$ 105,976
Ending Balance (in shares) at Jun. 30, 2017		33,105