Capital Resources (Narrative) (Details) (USD $)	12 Months Ended							0 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010	Dec. 31, 2009	Dec. 05, 2008	Dec. 31, 2007	Sep. 29, 2006	Dec. 31, 2003	Dec. 05, 2008 Five Years [Member]	Dec. 05, 2008 Thereafter [Member]
Capital Resources [Line Items]
Common stock value before issuance costs and fees		$ 132,300,000	$ 126,000,000
Common stock shares		15,028,409	13,869,856
New common stock, value per share		$ 8.80	$ 8.61
Common stock value		124,928,000	119,448,000
U.S. treasury purchased senior preferred stock	250,992,000	247,455,000		258,000,000
Senior preferred stock, cumulative compounding dividends rate								5.00%	9.00%
Non-voting shares are callable at par value after, years	3
Warrants to purchase, shares of common stock	1,846,374
Warrants exercise price	$ 20.96
Warrants, aggregate market price	38,700,000
Senior preferred stock	15.00%
Subordinated debt						50,000,000
Subordinated note original maturity term, years						10
Unsecured debt that bore interest						three-month LIBOR plus 110 basis points
Subordinated note extension	LIBOR plus 110 basis points
Increased unsecure debt to bore interest	LIBOR plus 330 basis points
Current interest rate on subordinated note	3.88%	1.40%
Maximum consecutive quarterly period to defer interest Junior Subordinated Notes	20
Number of trusts established for special purpose	5				2		3
Aggregate amount of trust preferred securities and certain other capital elements, percentage	25.00%
Interest expense on Junior Subordinated Notes	$ 3,000,000	$ 3,100,000	$ 3,800,000