Consolidated Statements Of Equity (USD $) In Thousands, except Share data	7.75% Series A Cumulative Redeemable Preferred Shares [Member]	8.375% Series B Cumulative Redeemable Preferred Shares [Member]	8.875% Series C Cumulative Redeemable Preferred Shares [Member]	Common Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings (Deficit) [Member]	Total Shareholders' Equity [Member]	Noncontrolling Interests [Member]	Total
Balance at Dec. 31, 2008	$ 28	$ 23	$ 16	$ 648	$ 1,613,853	$ (231,425)	$ (304,059)	$ 1,079,084	$ 190,257	$ 1,269,341
Balance, shares at Dec. 31, 2008	2,760,000	2,258,300	1,600,000	21,588,627
Net income (loss)	0	0	0	0	0	0	(427,562)	(427,562)	(13,419)	(440,981)
Preferred dividends	0	0	0	0	0	0	(13,641)	(13,641)	0	(13,641)
Other comprehensive loss, net	0	0	0	0	0	112,452	0	112,452	677	113,129
Stock compensation expense	0	0	0	2	3,716	0	0	3,718	0	3,718
Stock compensation expense, shares				71,395
Acquisition of noncontrolling interests	0	0	0	0	0	0	0	0	433	433
Deconsolidation of VIEs	0	0	0	0	0	0	0	0	(175,031)	(175,031)
Common shares issued, net	0	0	0	94	12,859	0	0	12,953	0	12,953
Common shares issued, shares				3,146,844
Balance at Dec. 31, 2009	28	23	16	744	1,630,428	(118,973)	(745,262)	767,004	2,917	769,921
Balance, shares at Dec. 31, 2009	2,760,000	2,258,300	1,600,000	24,806,866
Net income (loss)	0	0	0	0	0	0	111,793	111,793	(880)	110,913
Preferred dividends	0	0	0	0	0	0	(13,641)	(13,641)	0	(13,641)
Other comprehensive loss, net	0	0	0	0	0	(8,629)	0	(8,629)	0	(8,629)
Stock compensation expense	0	0	0	1	2,856	0	0	2,857	0	2,857
Stock compensation expense, shares				41,957
Acquisition of noncontrolling interests	0	0	0	0	(332)	0	0	(332)	(1,603)	(1,935)
Common shares issued, net	0	0	0	315	58,729	0	0	59,044	0	59,044
Common shares issued, shares				10,451,367
Balance at Dec. 31, 2010	28	23	16	1,060	1,691,681	(127,602)	(647,110)	918,096	434	918,530
Balance, shares at Dec. 31, 2010	2,760,000	2,258,300	1,600,000	35,300,190
Net income (loss)	0	0	0	0	0	0	(37,481)	(37,481)	(229)	(37,710)
Preferred dividends	0	0	0	0	0	0	(13,649)	(13,649)	0	(13,649)
Common dividends declared	0	0	0	0	0	0	(10,431)	(10,431)	0	(10,431)
Other comprehensive loss, net	0	0	0	0	0	9,308	0	9,308	0	9,308
Stock compensation expense	0	0	0	6	(502)	0	0	(496)	0	(496)
Stock compensation expense, shares				303,138
Acquisition of noncontrolling interests	0	0	0	0	0	0	0	0	3,582	3,582
Common shares issued, net	0	0	0	170	44,790	0	0	44,960	0	44,960
Common shares issued, shares				5,686,238
Balance at Dec. 31, 2011	$ 28	$ 23	$ 16	$ 1,236	$ 1,735,969	$ (118,294)	$ (708,671)	$ 910,307	$ 3,787	$ 914,094
Balance, shares at Dec. 31, 2011	2,760,000	2,258,300	1,600,000	41,289,566