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Shareholders' Equity Transactions (Narrative) (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 25, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2014
Preferred stock redeemed       $ (32,000,000)        
Net proceeds from the sale of preferred and common stock           $ 33,800,000    
Preferred stock dividends   $ 212,000 $ 217,000 $ 429,000 $ 434,000      
Small Business Lending Fund [Member]                
Stock issued             $ 63,500,000  
Stock issued, shares             63,500  
Liquidation value of shares             $ 1,000  
Preferred stock dividend rate after five years             9.00%  
Threshold for qualified community banks             $ 10,000,000,000  
Small Business Lending Fund [Member] | Minimum [Member]                
Preferred stock dividend rate       1.00%        
Small Business Lending Fund [Member] | Maximum [Member]                
Preferred stock dividend rate       5.00%        
Series C Preferred Stock [Member]                
Stock issued, shares           728,706    
Preferred stock, outstanding   $ 7,287,000 $ 7,287,000 $ 7,287,000 $ 7,287,000     $ 7,287,000
Preferred stock, shares outstanding   728,706 728,706 728,706 728,706     728,706
Stock sold price per share           $ 10.00    
Preferred stock dividends   $ 58,000 $ 58,000 $ 117,000 $ 117,000      
Series B Preferred Stock [Member]                
Preferred stock, outstanding   $ 31,500,000 $ 63,500,000 $ 31,500,000 $ 63,500,000     $ 63,500,000
Preferred stock, shares outstanding   31,500 63,500 31,500 63,500     63,500
Preferred stock dividends   $ 153,000 $ 159,000 $ 312,000 $ 317,000      
Series B Preferred Stock [Member] | Small Business Lending Fund [Member]                
Preferred stock redeemed $ 32,000,000              
Preferred stock redeemed, shares 32,000              
Liquidation value of shares $ 1,000              
Preferred stock, outstanding $ 31,500,000              
Preferred stock, shares outstanding 31,500              
Common Stock [Member]                
Stock issued, shares           2,656,294