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Preferred and Common Stock (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 0 Months Ended 9 Months Ended 9 Months Ended 0 Months Ended 48 Months Ended
Mar. 28, 2013
Sep. 30, 2014
Sep. 30, 2013
Mar. 28, 2013
Sep. 30, 2014
Capital Purchase Program [Member]
Sep. 30, 2013
Capital Purchase Program [Member]
May 08, 2013
Series A Preferred Stock [Member]
Mar. 27, 2013
Series A Preferred Stock [Member]
Aug. 24, 2011
Series A Preferred Stock [Member]
Jan. 09, 2013
Series A Preferred Stock [Member]
Jan. 09, 2009
Series A Preferred Stock [Member]
Class of Stock [Line Items]                      
Proceeds from issuance of CPP Shares                   $ 25,000  
Repurchase price of CPP shares (in dollars per share)                     $ 1,000
Cumulative dividend rate of CPP Shares (in hundredths)                   5.00%  
CPP Shares dividend period (in years)                   5 years  
CPP Shares dividend rate after first five years (in hundredths)                   9.00%  
Repurchase of fixed rate perpetual preferred stock, series A   0 12,500       10,000 2,500 12,500    
Number of shares of common stock issuable pursuant to the Warrants, maximum (in shares)   225,904 225,904                
Exercise price of the Warrants (in dollars per share)   16.60                  
Outstanding CPP shares - value       10,000              
Term of warrants   10 years                  
Assumptions used in determining fair value of warrants, common stock price (in dollars per share)   $ 16.60                  
Assumptions used in determining fair value of warrants, dividend yield   4.70%                  
Assumptions used in determining fair value of warrants, stock price volatility   24.43%                  
Assumptions used in determining fair value of warrants, risk-free interest rate   2.01%                  
Expected life of CPP Shares upon issuance   5 years                  
Proceeds from sale of common stock (in shares) 760,771                    
Proceeds from sale of common stock 11,548 342 11,872                
Issuance of common stock for plans   $ 342 $ 11,872   $ 342 $ 324