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Stockholders' Equity (Narrative) (Details) (USD $)
 0 Months Ended 12 Months Ended
Dec. 07, 2011
Jan. 12, 2009
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2003
Sep. 15, 2011
Nonvoting senior preferred stock issued, value   $ 10,000,000         $ 11,250,000
Warrants issued to treasury for purchase of common stock, shares   173,410          
Exercise price of warrants issued for common stock   $ 8.65          
Date rights offering was complete   October 2009          
Number of shares underlying the warrants held by Treasury   86,705          
Percentage of original amount of warrants left   50          
Tier One Leverage Capital             1,250,000
Payments for Repurchase of Warrants 245,000,000   0 245,000 0    
Proceeds from Issuance of Trust Preferred Securities     5,000,000     5,200,000  
Series A [Member]
              
Fixed Rate Cumulative Perpetual Preferred Stock Redemption Shares             10,000
Preferred Stock, Redemption Price Per Share             $ 1,000
Preferred Stock, Redemption Amount             10,041,667
Series B [Member]
              
Convertible Preferred Stock, Shares Issued upon Conversion             11,250
Preferred Stock, Liquidation Preference, Value             $ 1,000