Consolidated Statements of Changes in Equity (USD $) In Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	(Accumulated Deficit) Retained Earnings [Member]	Non-Controlling Interest [Member]
Balance at Dec. 31, 2010	$ 3,024,547	$ 937,323	$ 790,956	$ 2,293,263	$ (114,176)	$ 57,158	$ (966,606)	$ 26,629
Net loss	(118,408)	0	0	0	0	0	(118,188)	(220)
Net income	(118,188)
Other comprehensive income (loss), net of taxes	8,747	0	0	0	0	8,747	0	0
Cash dividends declared on common stock - $0.02 per share	(15,705)	0	0	0	0	0	(15,705)	0
Cash dividends paid on preferred stock	(24,197)	0	0	(24,197)	0	0	0	0
Accretion of discount on preferred stock	0	4,773	0	(4,773)	0	0	0	0
Restricted share unit activity	0	0	17	(17)	0	0	0	0
Share-based compensation expense	2,363	0	0	2,363	0	0	0	0
Change in ownership at majority-owned subsidiary	(26,409)	0	0	0	0	0	0	(26,409)
Balance at Jun. 30, 2011	2,850,938	942,096	790,973	2,266,639	(114,176)	65,905	(1,100,499)	0
Balance at Dec. 31, 2011	2,827,452	947,017	790,989	2,241,171	(114,176)	21,093	(1,058,642)	0
Net loss	75,444
Net income	75,444	0	0	0	0	0	75,444	0
Other comprehensive income (loss), net of taxes	(14,090)	0	0	0	0	(14,090)	0	0
Cash dividends declared on common stock - $0.02 per share	(15,730)	0	0	0	0	0	(15,730)	0
Cash dividends paid on preferred stock	(24,197)	0	0	(24,197)	0	0	0	0
Accretion of discount on preferred stock	0	5,076	0	(5,076)	0	0	0	0
Restricted share unit activity	0	0	1,280	(1,207)	0	0	(73)	0
Share-based compensation expense	4,510	0	0	4,510	0	0	0	0
Balance at Jun. 30, 2012	$ 2,853,389	$ 952,093	$ 792,269	$ 2,215,201	$ (114,176)	$ 7,003	$ (999,001)	$ 0