CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Series D Preferred Stock [Member]	Preferred Stock [Member]	Total Stockholders' Equity	Total Stockholders' Equity Series D Preferred Stock [Member]	Total Stockholders' Equity Preferred Stock [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Series D Preferred Stock [Member]	Accumulated Deficit [Member] Preferred Stock [Member]	Non-Controlling Interests [Member]	Non-Controlling Interests [Member] Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect adjustment for equity-based compensation forfeitures									$ 384		$ (384)
Beginning balance (shares) at Dec. 31, 2015							42,834,138	904,884,394
Beginning balance at Dec. 31, 2015	$ 8,713,959			$ 8,523,987			$ 428	$ 9,049	11,931,768	$ (2,025)	(3,415,233)			$ 189,972
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of common stock to settle tax obligation (shares)								(127,741)
Repurchases of common stock to settle tax obligation	(1,024)			(1,024)				$ (1)	(1,023)
Equity-based compensation, net (shares)								712
Equity-based compensation, net	1,730			1,730				$ 0	1,730
Contributions from non-controlling interest holders	675													675
Distributions declared on common stock	(124,285)			(124,285)							(124,285)
Distributions to non-controlling interest holders	(3,299)													(3,299)
Distributions		$ (125)	$ (17,973)		$ (125)	$ (17,937)						$ (125)	$ (17,937)	(36)
Net income (loss)	(116,080)			(113,086)							(113,086)			(2,994)
Other comprehensive income (loss)	(9,564)			(9,320)						(9,320)				(244)
Ending balance (shares) at Mar. 31, 2016							42,834,138	904,757,365
Ending balance at Mar. 31, 2016	8,444,014			8,259,940			$ 428	$ 9,048	11,932,859	(11,345)	(3,671,050)			184,074
Beginning balance (shares) at Dec. 31, 2016							42,834,138	974,146,650
Beginning balance at Dec. 31, 2016	8,619,533			8,447,361			$ 428	$ 9,741	12,640,171	(2,556)	(4,200,423)			172,172
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of common stock to settle tax obligation (shares)								(140,832)
Repurchases of common stock to settle tax obligation	(1,184)			(1,184)				$ (1)	(1,183)
Equity-based compensation, net (shares)								232,640
Equity-based compensation, net	3,113			3,113				$ 2	3,111
Distributions declared on common stock	(133,929)			(133,929)							(133,929)
Distributions to non-controlling interest holders	(3,326)													(3,326)
Distributions		$ (178)	$ (17,973)		$ (178)	$ (17,937)						$ (178)	$ (17,937)		$ (36)
Net income (loss)	14,790			14,438							14,438			352
Other comprehensive income (loss)	780			761						761				19
Ending balance (shares) at Mar. 31, 2017							42,834,138	974,238,458
Ending balance at Mar. 31, 2017	$ 8,481,626			$ 8,312,445			$ 428	$ 9,742	$ 12,642,099	$ (1,795)	$ (4,338,029)			$ 169,181