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, 2009	$ 2,871,501	$ 928,207	$ 495,514	$ 1,604,362	$ (114,155)	$ 84,806	$ (147,693)	$ 20,460
Net income (loss)	(790,857)						(790,678)	(179)
Other comprehensive loss, net of income taxes	(27,648)					(27,648)
Cash dividends declared on common stock - $0.04 per share	(28,452)						(28,452)
Cash dividends paid on preferred stock	(48,394)			(48,394)
Accretion of discount on preferred stock	(9,116)	9,116		(9,116)
Issuance of common stock, net of issuance costs	769,114		293,250	475,864
Issuance of prepaid common stock purchase contracts	265,564			265,564
Settlement of prepaid common stock purchase contracts			2,156	(2,156)
Treasury shares purchased	(21)				(21)
Issuance (forfeitures) of non-vested stock, net			(9)	9
Restricted share unit activity			44	(44)
Share-based compensation expense	7,158			7,158
Stock options exercised	1		1
Share-based compensation tax benefit	16			16
Change in ownership at majority-owned subsidiary	6,565						217	6,348
Balance at Dec. 31, 2010	3,024,547	937,323	790,956	2,293,263	(114,176)	57,158	(966,606)	26,629
Net income (loss)	(60,844)						(60,624)	(220)
Other comprehensive loss, net of income taxes	(36,065)					(36,065)
Cash dividends declared on common stock - $0.04 per share	(31,412)						(31,412)
Cash dividends paid on preferred stock	(48,394)			(48,394)
Accretion of discount on preferred stock	(9,694)	9,694		(9,694)
Issuance of prepaid common stock purchase contracts			15	(15)
Issuance (forfeitures) of non-vested stock, net			(1)	1
Restricted share unit activity			19	(19)
Share-based compensation expense	6,029			6,029
Change in ownership at majority-owned subsidiary	(26,409)							(26,409)
Balance at Dec. 31, 2011	2,827,452	947,017	790,989	2,241,171	(114,176)	21,093	(1,058,642)
Net income (loss)	830,209						830,209
Other comprehensive loss, net of income taxes	(16,992)					(16,992)
Cash dividends declared on common stock - $0.04 per share	(31,462)						(31,462)
Cash dividends paid on preferred stock	(48,394)			(48,394)
Accretion of discount on preferred stock	(10,310)	10,310		(10,310)
Restricted share unit activity			1,284	(1,211)			(73)
Share-based compensation expense	9,333			9,333
Share-based compensation tax deficiency	(715)			(715)
Balance at Dec. 31, 2012	$ 3,569,431	$ 957,327	$ 792,273	$ 2,189,874	$ (114,176)	$ 4,101	$ (259,968)