CONSOLIDATED STATEMENT OF EQUITY - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands	Total	Preferred Shares	Common Shares	Additional Paid-in Capital	Accumulated Distributions in Excess of Net Income	Deferred Compensation Obligation	Accumulated Other Comprehensive Loss	Treasury Stock at Cost	Non-Controlling Interests
Beginning Balance at Dec. 31, 2016	$ 3,246,012	$ 350,000	$ 36,630	$ 5,487,212	$ (2,632,327)	$ 15,149	$ (4,192)	$ (14,957)	$ 8,497
Issuance of common shares related to stock plans	12,317	0	85	11,502	0	0	0	730	0
Issuance of preferred shares	168,903	175,000	0	(6,097)	0	0	0	0	0
Stock-based compensation, net	6,002	0	0	6,486	0	(4,895)	0	4,411	0
Distributions to non-controlling interests	(418)	0	0	0	0	0	0	0	(418)
Dividends declared-common shares	(139,726)	0	0	0	(139,726)	0	0	0	0
Dividends declared-preferred shares	(12,427)	0	0	0	(12,427)	0	0	0	0
Comprehensive (loss) income	(22,447)	0	0	0	(24,630)	0	1,560	0	623
Ending Balance at Jun. 30, 2017	$ 3,258,216	$ 525,000	$ 36,715	$ 5,499,103	$ (2,809,110)	$ 10,254	$ (2,632)	$ (9,816)	$ 8,702