CONDENSED CONSOLIDATED STATEMENT OF EQUITY - 6 months ended Jun. 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	25,027			23,575	1,452
Cash contributions from members of consolidated entities	33,963				33,963
Cash distributions to members of consolidated entities	(5,226)				(5,226)
Shares remitted to Company to satisfy employee tax obligations	(844)	$ (1)	(843)
Shares remitted to Company to satisfy employee obligations (in shares)		(70)
Stock based compensation expense	2,561	$ 6	2,555
Stock based compensation expense (in shares)		600
Reversal of excess income tax benefit from stock based awards	(178)		(178)
Ending Balance at Jun. 30, 2016	$ 726,772	$ 327	$ 415,344	$ 241,538	$ 69,563
Ending Balance (in shares) at Jun. 30, 2016		32,708