CONSOLIDATED STATEMENTS OF EQUITY - 3 months ended Mar. 31, 2018 - USD ($)	Series E Cumulative Redeemable Preferred Stock Preferred Stock	Series E Cumulative Redeemable Preferred Stock Cumulative dividends and distributions	Series E Cumulative Redeemable Preferred Stock	Series F Cumulative Redeemable Preferred Stock Preferred Stock	Series F Cumulative Redeemable Preferred Stock Cumulative dividends and distributions	Series F Cumulative Redeemable Preferred Stock	Common Stock	Additional Paid In Capital	Retained Earnings	Cumulative dividends and distributions	Noncontrolling Interest in Consolidated Joint Venture	Total
Beginning Balance at Dec. 31, 2017	$ 115,000,000			$ 75,000,000			$ 2,253,000	$ 2,679,221,000	$ 932,277,000	$ (1,270,013,000)	$ 48,440,000	$ 2,582,178,000
Beginning Balance (in shares) at Dec. 31, 2017	4,600,000			3,000,000			225,321,660
Increase (Decrease) in Stockholders' Equity
Deferred stock compensation, net							$ 3,000	(2,122,000)				(2,119,000)
Deferred stock compensation, net (in shares)							293,052
Common stock distributions and distributions payable										(11,281,000)		(11,281,000)
Preferred stock dividends and dividends payable		$ (1,998,000)	$ (1,998,000)		$ (1,209,000)	$ (1,209,000)
Distributions to noncontrolling interest											(1,169,000)	(1,169,000)
Net income									36,016,000		2,439,000	38,455,000
Ending Balance at Mar. 31, 2018	$ 115,000,000			$ 75,000,000			$ 2,256,000	$ 2,677,099,000	$ 968,293,000	$ (1,284,501,000)	$ 49,710,000	$ 2,602,857,000
Ending Balance (in shares) at Mar. 31, 2018	4,600,000			3,000,000			225,614,712