Earnings Per Common Share (Schedule of Basic and Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Earnings Per Share [Abstract]
Net income	$ 18,872	$ 5,204	$ 33,283	$ 18,176
Less: Preferred dividends and accretion of issuance discount for preferred stock	0	(2,730)	0	(4,947)
Net income applicable to common shareholders	18,872	2,474	33,283	13,229
Less: Earnings allocated to participating securities	(177)	(22)	(311)	(127)
Earnings allocated to common shareholders, Basic	18,695	2,452	32,972	13,102
Weighted average common shares outstanding	39,131	38,976	39,092	33,938
Basic earnings per common share	$ 0.48	$ 0.06	$ 0.84	$ 0.39
Earnings allocated to common shareholders, Diluted	18,695	2,452	32,972	13,102
Weighted average common shares outstanding	39,131	38,976	39,092	33,938
Dilutive effect of equity awards and warrants	$ 61	$ 161	$ 75	$ 204
Weighted average diluted common shares outstanding	39,192	39,137	39,167	34,142
Diluted earnings per common share	$ 0.48	$ 0.06	$ 0.84	$ 0.38
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.	75	62	62	54

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