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 Income [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Series D Preferred Stock [Member]	Accumulated Deficit [Member] Preferred Stock [Member]	Non-Controlling Interests [Member]
Beginning balance (shares) at Dec. 31, 2014							42,834,138	905,530,431
Beginning balance at Dec. 31, 2014	$ 9,382,330			$ 9,153,888			$ 428	$ 9,055	$ 11,920,253	$ 2,728	$ (2,778,576)			$ 228,442
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchases (shares)								(132,826)
Common stock repurchases	(1,207)			(1,207)				$ (1)	(1,206)
Equity-based compensation, net (shares)								(262,886)
Equity-based compensation, net	818			818				$ (3)	821
Tax shortfall from equity-based compensation	(510)			(510)					(510)
Distributions to non-controlling interest holders	(464)													(464)
Distributions		$ (5)	$ (17,973)		$ (5)	$ (17,973)						$ (5)	$ (17,973)
Net loss	(30,693)			(29,970)							(29,970)			(723)
Other comprehensive loss	(6,864)			(6,864)						(6,864)
Ending balance (shares) at Mar. 31, 2015							42,834,138	905,134,719
Ending balance at Mar. 31, 2015	9,325,432			9,098,177			$ 428	$ 9,051	11,919,358	(4,136)	(2,826,524)			227,255
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]
Common stock repurchases (shares)								(127,741)
Common stock repurchases	(1,024)			(1,024)				$ (1)	(1,023)
Equity-based compensation, net (shares)								712
Equity-based compensation, net	1,730			1,730					1,730
Contributions from non-controlling interest holders	675													675
Distributions declared	(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 loss	(116,080)			(113,086)							(113,086)			(2,994)
Other comprehensive 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative-effect adjustment for equity-based compensation forfeitures	$ 0								$ 384		$ (384)