Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net (loss) income	$ 181,447	$ (4,086)	$ 124,611
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	(1,257)	0	0
Comprehensive Income (Loss)	180,190	(4,086)	124,611
Noncontrolling Interest in Net Income (Loss) Operating Partnerships, Redeemable	24,248	(5,993)	18,704
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest	201	0	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	156,143	1,907	105,907
Preferred stock dividends	(20,739)	(27,245)	(27,245)
Other Preferred Stock Dividends and Adjustments	(12,495)	0	0
Comprehensive income attributable to common shares	122,909	(25,338)	78,662
Subsidiaries [Member]
Net (loss) income	181,447	(4,086)	124,611
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	(1,257)	0	0
Comprehensive Income (Loss)	180,190	(4,086)	124,611
Preferred stock dividends	(20,739)	(27,245)	(27,245)
Other Preferred Stock Dividends and Adjustments	(12,495)	0	0
Comprehensive income attributable to common shares	$ 146,956	$ (31,331)	$ 97,366