CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS EQUITY (USD $) In Thousands	Total	Preferred Stock [Member]	Common stock [Member]	Additional paid-in-capital [Member]	Treasury Shares At Cost [Member]	Distributions in Excess of Accumulated Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling interest [Member]
Balance at Dec. 31, 2009	$ 1,074,247		$ 662	$ 1,551,218	$ (140,018)	$ (384,013)	$ (18,408)	$ 64,806
Issuance of Common Stock, Net of Issuance Costs	49,973		64	49,909
Stock Based Compensation Activity	5,741		5	5,736
Conversion of Units to Common Stock			1	315				(316)
Reallocation-Additional Paid in Capital				836				(836)
Preferred Dividends	(19,677)					(19,677)
Net Loss	(221,619)					(202,821)		(18,798)
Reallocation-Other Comprehensive Income							(139)	139
Other Comprehensive Income	3,479						3,208	271
Balance at Dec. 31, 2010	892,144		732	1,608,014	(140,018)	(606,511)	(15,339)	45,266
Issuance of Common Stock, Net of Issuance Costs	202,332		174	202,158
Stock Based Compensation Activity	2,759		4	3,088		(333)
Conversion of Units to Common Stock			1	1,108				(1,109)
Reallocation-Additional Paid in Capital				(3,019)				3,019
Preferred Dividends	(19,565)					(19,565)
Net Loss	(9,190)					(7,445)		(1,745)
Reallocation-Other Comprehensive Income							(237)	237
Other Comprehensive Income	4,115						3,864	251
Balance at Dec. 31, 2011	1,072,595		911	1,811,349	(140,018)	(633,854)	(11,712)	45,919
Issuance of Common Stock, Net of Issuance Costs	134,436		109	134,327
Redemption of Preferred Stock	(50,044)			(48,240)		(1,804)
Stock Based Compensation Activity	4,582		6	6,220		(1,644)
Conversion of Units to Common Stock			5	4,758				(4,763)
Reallocation-Additional Paid in Capital				(1,924)				1,924
Preferred Dividends	(18,947)					(18,947)
Net Loss	(2,519)					(1,318)		(1,201)
Reallocation-Other Comprehensive Income							(107)	107
Other Comprehensive Income	5,550						5,262	288
Balance at Dec. 31, 2012	$ 1,145,653		$ 1,031	$ 1,906,490	$ (140,018)	$ (657,567)	$ (6,557)	$ 42,274