Consolidated Statements of Changes in Equity (USD $) In Thousands	Total	Preferred Stock	Common Stock at Par	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interest
Beginning Balance at Dec. 31, 2008	$ 324,919	$ 33,657	$ 474	$ 317,565	$ (28,118)	$ 1,341
Incentive stock plan compensation expense	2,118			2,118
Incentive stock plan grants issued and forfeited			11	(11)
Net loss	(13,967)			(13,967)
Non-controlling interest in consolidated subsidiaries	(51)					(51)
Issuance of common stock	11,046		32	11,014
Dividends declared-preferred	(2,844)			(2,844)
Dividends declared-common	(10,508)			(10,508)
Distributions declared-operating partnership units	(33)					(33)
Amortization of losses on securities previously classified as available for sale	562				562
Increase in fair value of securities available for sale	2,463				2,463
Reclassification of derivative items into earnings	761				761
Ending Balance at Dec. 31, 2009	314,467	33,657	517	303,368	(24,332)	1,257
Incentive stock plan compensation expense	2,541			2,541
Incentive stock plan grants issued and forfeited			5	(5)
Net loss	(13,140)			(13,140)
Non-controlling interest in consolidated subsidiaries	(52)					(52)
Issuance of common stock	25,102		54	25,048
Issuance of preferred stock	40,223	40,223
Repurchase of convertible senior notes-equity component	(1,050)			(1,050)
Dividends declared-preferred	(6,501)			(6,501)
Dividends declared-common	(14,029)			(14,029)
Distributions declared-operating partnership units	(38)					(38)
Amortization of losses on securities previously classified as available for sale	1,765				1,765
Increase in fair value of securities available for sale	1,759				1,759
Reclassification of derivative items into earnings	592				592
Ending Balance at Dec. 31, 2010	351,639	73,880	576	296,232	(20,216)	1,167
Incentive stock plan compensation expense	2,785			2,785
Incentive stock plan grants issued and forfeited			4	(4)
Net loss	(1,835)			(1,835)
Non-controlling interest in consolidated subsidiaries	(20)					(20)
Issuance of common stock	54,269		102	54,167
Repurchase of common stock	(6,736)		(18)	(6,718)
Dividends declared-preferred	(6,510)			(6,510)
Dividends declared-common	(16,815)			(16,815)
Distributions declared-operating partnership units	(41)					(41)
Amortization of losses on securities previously classified as available for sale	150				150
Increase in fair value of securities available for sale	5,529				5,529
Reclassification of derivative items into earnings	3,486				3,486
Ending Balance at Dec. 31, 2011	$ 385,901	$ 73,880	$ 664	$ 321,302	$ (11,051)	$ 1,106