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Shareholders' Equity Transactions (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Oct. 16, 2015
Jun. 25, 2015
Dec. 21, 2012
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2012
Dec. 31, 2011
Preferred stock redeemed         $ 63,500      
Preferred stock dividends       $ 175 603 $ 868    
Small Business Lending Fund [Member]                
Stock issued               $ 63,500
Stock issued, shares               63,500
Liquidation value of shares               $ 1,000
Threshold for qualified community banks               $ 10,000,000
Preferred stock redeemed         63,500      
Series C Preferred Stock [Member]                
Stock issued, shares             728,706  
Number of shares exchanged       728,706        
Stock sold price per share             $ 10.00  
Accrued dividends       $ 175 233 233    
Series B Preferred Stock [Member] | Small Business Lending Fund [Member]                
Liquidation value of shares $ 1,000 $ 1,000            
Preferred stock redeemed $ 31,500 $ 32,000            
Preferred stock redeemed, shares 31,500 32,000            
Preferred stock dividends         $ 370 $ 635    
Common Stock [Member]                
Stock issued, shares             2,656,294  
Common stock issued under stock option plans, shares       23 7 5    
Common Stock [Member] | Series C Preferred Stock [Member]                
Net proceeds from the sale of preferred and common stock     $ 33,800