CONDENSED CONSOLIDATED STATEMENT OF EQUITY - 9 months ended Sep. 30, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Non-Controlling Interests
Beginning Balance at Dec. 31, 2015	$ 671,469	$ 322	$ 413,810	$ 217,963	$ 39,374
Beginning Balance (in shares) at Dec. 31, 2015		32,178
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	41,541			36,644	4,897
Cash contributions from members of consolidated entities	36,140				36,140
Cash distributions to members of consolidated entities	(12,768)				(12,768)
Shares remitted to Company to satisfy employee tax obligations	(918)	$ (1)	(917)
Shares remitted to Company to satisfy employee tax obligations (in shares)		(75)
Stock based compensation expense	4,087	$ 6	4,081
Stock based compensation expense (in shares)		613
Reversal of excess income tax benefit from stock based awards	(238)		(238)
Ending Balance at Sep. 30, 2016	$ 739,313	$ 327	$ 416,736	$ 254,607	$ 67,643
Ending Balance (in shares) at Sep. 30, 2016		32,716