Consolidated Statements of Changes in Stockholder's Equity (Unaudited) (USD $) In Thousands	Total	Preferred Equity	Common Stock	Surplus	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock
Beginning balance at Dec. 31, 2009	$ 2,738,608	$ 511,107	$ 1,284	$ 1,082,335	$ 1,081,156	$ 63,432	$ (706)
Comprehensive (loss) income:
Net income (loss)	(14,864)	0	0	0	(14,864)	0	0
Other comprehensive income	15,366	0	0	0	0	15,366	0
Comprehensive income (loss)	502
Common stock issued:
Issuance of common stock	478,358	0	448	477,910	0	0	0
Stock-based compensation plans, net	2,316	0	6	2,942	(2,151)	0	1,519
Purchase of treasury stock	(813)	0	0	0	0	0	(813)
Cash dividends:
Common stock, $0.03 per share	(5,210)	0	0	0	(5,210)	0	0
Preferred stock	(19,688)	0	0	0	(19,688)	0	0
Proceeds from issuance of preferred stock	0
Accretion of preferred stock discount	0	2,443	0	0	(2,443)	0	0
Stock-based compensation expense, net	6,769	0	0	6,769	0	0	0
Tax benefit of stock options	7	0	0	7	0	0	0
Ending balance at Sep. 30, 2010	3,200,849	513,550	1,738	1,569,963	1,036,800	78,798	0
Beginning balance at Dec. 31, 2010	3,158,791	514,388	1,739	1,573,372	1,041,666	27,626	0
Comprehensive (loss) income:
Net income (loss)	98,574	0	0	0	98,574	0	0
Other comprehensive income	61,687	0	0	0	0	61,687	0
Comprehensive income (loss)	160,261
Common stock issued:
Stock-based compensation plans, net	3,349	0	7	3,101	(399)	0	640
Purchase of treasury stock	(640)	0	0	0	0	0	(640)
Cash dividends:
Common stock, $0.03 per share	(5,231)	0	0	0	(5,231)	0	0
Preferred stock	(12,918)	0	0	0	(12,918)	0	0
Redemption of preferred stock	(525,000)	(525,000)	0	0	0	0	0
Proceeds from issuance of preferred stock	63,272	63,272
Accretion of preferred stock discount	0	10,612	0	0	(10,612)	0	0
Stock-based compensation expense, net	8,724	0	0	8,724	0	0	0
Tax benefit of stock options	11	0	0	11	0	0	0
Ending balance at Sep. 30, 2011	$ 2,850,619	$ 63,272	$ 1,746	$ 1,585,208	$ 1,111,080	$ 89,313	$ 0