Quarterly report pursuant to Section 13 or 15(d)

Shareholder's Equity (Details)

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Shareholder's Equity (Details) (USD $)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2011
Mar. 31, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Dec. 31, 2008
Jul. 21, 2011
Jan. 19, 2011
Dec. 31, 2010
Shareholders Equity [Line Items]                  
Troubled Asset Relief Program (TARP) Equity capital received, Shares 1,967,071   1,967,071 1,967,071 1,967,071       1,967,071
Common stock, par value $ 0.01   $ 0.01 $ 0.01 $ 0.01       $ 0.01
Shareholder's Equity (Textuals) [Abstract]                  
Term to exercise warrants (years)           10 years      
Purchase of common stock shares           23,600,000      
Purchase of common stock shares, exercise price           $ 8.90      
Purchase price of warrants originally issued to the Treasury               $ 49,100,000  
Cash dividends declared, prior period $ 0.01 $ 0.01 $ 0.01 $ 0.02 $ 0.02        
Cash Dividends declared, current period             $ 0.04    
Series B Preferred Stock [Member]
                  
Shareholders Equity [Line Items]                  
Troubled Asset Relief Program (TARP) Equity capital received, Amount           $ 1,400,000,000      
Troubled Asset Relief Program (TARP) Equity capital received, Shares           1,400,000      
Common Stock [Member]
                  
Shareholders Equity [Line Items]                  
Common stock, par value           $ 0.01