Earnings Per Share - Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Diluted earnings per share
Income (loss)	$ 9,581	$ 32,196	$ 43,792	$ 39,355
Loss from discontinued operations, net of income taxes	(1)	0	(3)	(5)
Net income	9,580	32,196	43,789	39,350
Less: net income attributable to noncontrolling interests	4,707	6,934	14,153	18,184
Numerator	$ 4,873	$ 25,262	$ 29,636	$ 21,166
Weighted average common stock outstanding	43,808	42,708	43,775	42,674
Effect of dilutive securities	163	305	194	302
Denominator, Net, Diluted	43,971	43,013	43,969	42,976
Diluted earnings (loss) per share, Net	$ 0.11	$ 0.59	$ 0.67	$ 0.49
Continuing Operations [Member]
Diluted earnings per share
Income (loss)	$ 9,581	$ 32,196	$ 43,792	$ 39,355
Less: net income attributable to noncontrolling interests	4,707	6,934	14,153	18,184
Numerator	$ 4,874	$ 25,262	$ 29,639	$ 21,171
Weighted average common stock outstanding	43,808	42,708	43,775	42,674
Effect of dilutive securities	163	305	194	302
Denominator, Net, Diluted	43,971	43,013	43,969	42,976
Diluted earnings per share, Continuing Operations	$ 0.11	$ 0.59	$ 0.67	$ 0.49
Discontinued Operations [Member]
Diluted earnings per share
Loss from discontinued operations, net of income taxes	$ (1)	$ 0	$ (3)	$ (5)
Less: net income attributable to noncontrolling interests	0	0	0	0
Numerator	$ (1)	$ 0	$ (3)	$ (5)
Weighted average common stock outstanding	43,808	42,708	43,775	42,674
Effect of dilutive securities	163	305	194	302
Denominator, Net, Diluted	43,971	43,013	43,969	42,976
Diluted earnings per share, Discontinued Operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00