Consolidated Statement Of Stockholders' Equity - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Distributions in Excess of Accumulated Earnings	Accumulated other comprehensive loss	Noncontrolling Interests	Series A Preferred Stock	Series A-4 Preferred Stock	Series A-4 Preferred Stock Additional Paid-in Capital	Series A-4 preferred OP units	Series A-4 preferred OP units Additional Paid-in Capital
Balance at Dec. 31, 2016	$ 2,362,227	$ 732	$ 3,321,441	$ (1,023,415)	$ (3,181)	$ 66,616	$ 34
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from exercise of options, net	45		45
Issuance of OP units and common stock, net	461,248	57	459,190			2,001
Conversion of Series A-4 preferred stock	4,720	1	4,719
Adjustments to Additional Paid in Capital, Redemption of Stock								$ (3,867)	$ (3,867)	$ (2,571)	$ (2,571)
Share-based compensation - amortization and forfeitures	6,917		6,769	148
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(100)		(6,201)			6,101
Foreign currency exchange	2,329				2,200	129
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest and Returns from Preferred Stock	42,390			40,116		2,274
Distributions	(111,915)			(106,277)		(5,638)
Balance at Jun. 30, 2017	$ 2,761,553	$ 790	$ 3,780,599	$ (1,089,428)	$ (981)	$ 70,539	$ 34