CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Series D Cumulative Redeemable Preferred Stock Preferred Stock	Series D Cumulative Redeemable Preferred Stock Cumulative dividends and distributions	Series D Cumulative Redeemable Preferred Stock	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 Ventures	Total
Beginning Balance at Dec. 31, 2013	$ 115,000									$ 1,809	$ 2,068,721	$ 224,240	$ (511,444)	$ 54,073	$ 1,952,399
Beginning Balance (in shares) at Dec. 31, 2013	4,600,000									180,858,699
Increase (Decrease) in Stockholders' Equity
Net proceeds from sale of common stock										$ 194	283,262				283,456
Number of shares of common stock sold (in shares)										19,352,703
Issuance of common stock in connection with hotel acquisition, net										$ 40	59,894				59,934
Issuance of common stock in connection with hotel acquisition, net (in shares)										4,034,970
Deferred stock compensation, net										$ 5	6,690				6,695
Deferred stock compensation, net (in shares)										520,346
Distributions to noncontrolling interests														(8,488)	(8,488)
Cash and/or stock common stock distributions and distributions payable													(103,901)		(103,901)
Preferred stock dividends and dividends payable		$ (9,200)	$ (9,200)
Net income												81,263		6,676	87,939
Ending Balance at Dec. 31, 2014	$ 115,000									$ 2,048	2,418,567	305,503	(624,545)	52,261	2,268,834
Ending Balance (in shares) at Dec. 31, 2014	4,600,000									204,766,718
Increase (Decrease) in Stockholders' Equity
Deferred stock compensation, net										$ 7	2,840				2,847
Deferred stock compensation, net (in shares)										710,108
Distributions to noncontrolling interests														(9,981)	(9,981)
Sale of noncontrolling interest														(125)	(125)
Issuance of common stock distributions										$ 21	37,328				37,349
Issuance of common stock distributions (in shares)										2,127,565
Cash and/or stock common stock distributions and distributions payable													(294,123)		(294,123)
Preferred stock dividends and dividends payable		(9,200)	(9,200)
Net income												347,355		8,164	355,519
Ending Balance at Dec. 31, 2015	$ 115,000									$ 2,076	2,458,889	652,704	(927,868)	50,319	2,351,120
Ending Balance (in shares) at Dec. 31, 2015	4,600,000									207,604,391
Increase (Decrease) in Stockholders' Equity
New Accounting Pronouncement Effect Of Adoption On Additional Paid In Capital | Accounting Standards Update 2016-09 Member											154
New Accounting Pronouncement Effect Of Adoption On Retained Earnings | Accounting Standards Update 2016-09 Member												(154)
Redemption of preferred stock	$ (115,000)										4,052		(4,052)		(115,000)
Redemption of preferred stock (in shares)	(4,600,000)
Net proceeds from sales of preferred stock				$ 115,000			$ 75,000				(6,640)				183,360
Number of shares of preferred stock sold (in shares)				4,600,000			3,000,000
Net proceeds from sale of common stock										$ 36	54,156				54,192
Number of shares of common stock sold (in shares)										3,564,047
Deferred stock compensation, net										$ 15	7,414				7,429
Deferred stock compensation, net (in shares)										1,482,621
Distributions to noncontrolling interests														(7,737)	(7,737)
Issuance of common stock distributions										$ 74	78,749				78,823
Issuance of common stock distributions (in shares)										7,422,081
Common stock distributions and distributions payable													(149,120)		(149,120)
Preferred stock dividends and dividends payable		$ (2,428)	$ (2,428)		$ (6,460)	$ (6,460)		$ (3,024)	$ (3,024)
Net income												134,197		6,480	140,677
Ending Balance at Dec. 31, 2016				$ 115,000			$ 75,000			$ 2,201	$ 2,596,620	$ 786,901	$ (1,092,952)	$ 49,062	$ 2,531,832
Ending Balance (in shares) at Dec. 31, 2016				4,600,000			3,000,000			220,073,140