CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Preferred Stock	Surplus	Accumulated deficit	Treasury Stock Member	Accumulated other comprehensive income (loss)
Beginning Balance at Dec. 31, 2010	$ 3,800,531	$ 1,023	$ 50,160	$ 4,103,211	$ (347,328)	$ (574)	$ (5,961)
Net Income	148,350				148,350
Issuance of stock	5,394	2		5,392
Dividends Abstract
Dividends, Preferred Stock, Cash	(2,792)				(2,792)
Treasury Stock Value Acquired Cost Method	(418)					(418)
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent	61,536						61,536
Transfers To Statutory Reserve	0
Ending Balance at Sep. 30, 2011	4,012,601	1,025	50,160	4,108,603	(201,770)	(992)	55,575
Beginning Balance at Dec. 31, 2011	3,918,753	1,026	50,160	4,123,898	(212,726)	(1,057)	(42,548)
Net Income	161,335				161,335
Issuance of stock	7,788	5		7,783
Dividends Abstract
Dividends, Preferred Stock, Cash	(2,792)				(2,792)
Stock Issued During Period, Value, Treasury Stock Reissued	1,063					1,063
Treasury Stock Value Acquired Cost Method	(276)					(276)
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent	(16,887)						(16,887)
Transfers To Statutory Reserve	0
Ending Balance at Sep. 30, 2012	$ 4,068,984	$ 1,031	$ 50,160	$ 4,131,681	$ (54,183)	$ (270)	$ (59,435)