Consolidated Statements of Changes in Equity (USD $) In Thousands, except Share data	Total	7.75% Series A cumulative redeemable preferred shares	8.375% Series B cumulative redeemable preferred shares	8.875% Series C cumulative redeemable preferred shares	Common Shares	Additional Paid In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Deficit)	Total Shareholders' Equity	Noncontrolling Interests
Beginning Balance at Dec. 31, 2010	$ 918,530	$ 28	$ 23	$ 16	$ 1,060	$ 1,691,681	$ (127,602)	$ (647,110)	$ 918,096	$ 434
Beginning Balance (in shares) at Dec. 31, 2010		2,760,000	2,258,300	1,600,000	35,300,190
Net income (loss)	(37,710)	0	0	0	0	0	0	(37,481)	(37,481)	(229)
Preferred dividends	(13,649)	0	0	0	0	0	0	(13,649)	(13,649)	0
Common dividends declared	(10,431)	0	0	0	0	0	0	(10,431)	(10,431)	0
Other comprehensive income (loss) net	9,308	0	0	0	0	0	9,308	0	9,308	0
Stock compensation expense	(496)	0	0	0	6	(502)	0	0	(496)	0
Stock compensation expense, shares					303,138
Acquisition of noncontrolling interests	3,582	0	0	0	0	0	0	0	0	3,582
Common shares issued, net	44,960	0	0	0	170	44,790	0	0	44,960	0
Common shares issued, net (in shares)					5,686,238
Ending Balance at Dec. 31, 2011	914,094	28	23	16	1,236	1,735,969	(118,294)	(708,671)	910,307	3,787
Ending Balance (in shares) at Dec. 31, 2011		2,760,000	2,258,300	1,600,000	41,289,566
Net income (loss)	(168,341)	0	0	0	0	0	0	(168,145)	(168,145)	(196)
Preferred dividends	(14,660)	0	0	0	0	0	0	(14,660)	(14,660)	0
Common dividends declared	(18,610)	0	0	0	0	0	0	(18,610)	(18,610)	0
Other comprehensive income (loss) net	23,121	0	0	0	0	0	23,121	0	23,121	0
Stock compensation expense	(4,653)	0	0	0	0	(4,653)	0	0	(4,653)	0
Stock compensation expense, shares					169,474
Acquisition of noncontrolling interests	294	0	0	0	0	0	0	0	0	294
Stock appreciation rights awarded	6,091	0	0	0	0	6,091	0	0	6,091	0
Preferred shares issued, net (shares)		364,288	30,165	40,100
Preferred shares issued, net	9,131	3	0	1	0	9,127	0	0	9,131	0
Common shares issued, net	91,379	0	0	0	524	90,855	0	0	91,379	0
Common shares issued, net (in shares)					17,454,102
Ending Balance at Dec. 31, 2012	837,846	31	23	17	1,760	1,837,389	(95,173)	(910,086)	833,961	3,885
Ending Balance (in shares) at Dec. 31, 2012		3,124,288	2,288,465	1,640,100	58,913,142
Net income (loss)	(285,364)	0	0	0	0	0	0	(285,392)	(285,392)	28
Preferred dividends	(22,616)	0	0	0	0	0	0	(22,616)	(22,616)	0
Common dividends declared	(39,212)	0	0	0	0	0	0	(39,212)	(39,212)	0
Other comprehensive income (loss) net	31,363	0	0	0	0	0	31,363	0	31,363	0
Stock compensation expense	(351)	0	0	0	0	(351)	0	0	(351)	0
Acquisition of noncontrolling interests	31,303	0	0	0	0	0	0	0	0	31,303
Distribution to noncontrolling interests	(1,089)	0	0	0	0	0	0	0	0	(1,089)
Stock appreciation rights awarded	1,332	0	0	0	0	1,332	0	0	1,332	0
Preferred shares issued, net (shares)		945,000
Preferred shares issued, net	21,829	10	0	0	0	21,819	0	0	21,829	0
Common shares issued, net	90,029	0	0	0	383	89,646	0	0	90,029	0
Common shares issued, net (in shares)			0	0	12,534,295
4.0% convertible senior notes embedded conversion option	8,817	0	0	0	0	8,817	0	0	8,817	0
4.0% convertible senior notes hedge	(8,838)	0	0	0	0	(8,838)	0	0	(8,838)	0
Repurchase of equity conversion right of 7.0% convertible senior notes	(29,359)	0	0	0	0	(29,359)	0	0	(29,359)	0
Ending Balance at Dec. 31, 2013	$ 635,690	$ 41	$ 23	$ 17	$ 2,143	$ 1,920,455	$ (63,810)	$ (1,257,306)	$ 601,563	$ 34,127
Ending Balance (in shares) at Dec. 31, 2013		4,069,288	2,288,465	1,640,100	71,447,437