Consolidated Statements Of Changes In Stockholders’ Equity (USD $)	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Balance Beginning at Dec. 31, 2008	$ 613,000	$ 189,617,000	$ 210,698,000	$ 837,390,000	$ (18,042,000)	$ (311,997,000)	$ 908,279,000
Balance Beginning (in Shares) at Dec. 31, 2008	48,630
Adjusted beginning balance (Balance Beginning of Period [Member])	613,000	189,617,000	210,698,000	848,661,000	(29,313,000)	(311,997,000)	908,279,000
Adjusted beginning balance (in Shares) (Balance Beginning of Period [Member])	48,630
Cumulative effect of change in accounting for other-than-temporary impairment				11,271,000	(11,271,000)
Total comprehensive income				(25,750,000)	10,647,000		(15,103,000)
Common dividends declared				(2,019,000)			(2,019,000)
Preferred dividends declared				(9,650,000)			(9,650,000)
Accretion on preferred stock		616,000		(616,000)			(615,000)	[1]
Issuance of common stock	57,000		56,560,000				56,617,000
Issuance of common stock (in Shares)	5,643
Share-based compensation expense			3,516,000				3,516,000
Restricted stock activity			(18,341,000)			18,366,000	25,000
Restricted stock activity (in Shares)	539
Treasury stock (purchased for) issued to benefit plans			(111,000)			(33,000)	(144,000)
Treasury stock (purchased for) issued to benefit plans (in Shares)	(19)
Balance Ending at Dec. 31, 2009	670,000	190,233,000	252,322,000	810,626,000	(18,666,000)	(293,664,000)	941,521,000
Balance Ending (in Shares) at Dec. 31, 2009	54,793
Total comprehensive income				(9,684,000)	(9,073,000)		(18,757,000)
Common dividends declared				(2,965,000)			(2,965,000)
Preferred dividends declared				(9,650,000)			(9,650,000)
Accretion on preferred stock		649,000		(649,000)			(649,000)	[1]
Issuance of common stock	188,000		195,847,000				196,035,000
Issuance of common stock (in Shares)	18,818
Share-based compensation expense			5,638,000				5,638,000
Restricted stock activity			(15,864,000)			15,624,000	(240,000)
Restricted stock activity (in Shares)	460
Treasury stock (purchased for) issued to benefit plans			(393,000)			856,000	463,000
Treasury stock (purchased for) issued to benefit plans (in Shares)	25
Balance Ending at Dec. 31, 2010	858,000	190,882,000	437,550,000	787,678,000	(27,739,000)	(277,184,000)	1,112,045,000
Balance Ending (in Shares) at Dec. 31, 2010	74,096						74,095,695
Total comprehensive income				36,563,000	14,463,000		51,026,000
Common dividends declared				(2,978,000)			(2,978,000)
Preferred dividends declared				(8,658,000)			(8,658,000)
Accretion on preferred stock		2,118,000		(2,118,000)			(2,118,000)	[1]
Redemption of Preferred Stock		(193,000,000)					(193,000,000)
Redemption of Warrant			(910,000)				(910,000)
Share-based compensation expense			6,362,000				6,362,000
Restricted stock activity			(14,895,000)			13,507,000	(1,388,000)
Restricted stock activity (in Shares)	335
Treasury stock (purchased for) issued to benefit plans			(106,000)			194,000	88,000
Treasury stock (purchased for) issued to benefit plans (in Shares)	4
Balance Ending at Dec. 31, 2011	$ 858,000		$ 428,001,000	$ 810,487,000	$ (13,276,000)	$ (263,483,000)	$ 962,587,000
Balance Ending (in Shares) at Dec. 31, 2011	74,435						74,435,004

[1] Includes $1.5 million in accelerated accretion related to the redemption of the Preferred Shares.