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Earnings Per Common Share (Tables)
9 Months Ended
Sep. 30, 2013
Earnings Per Common Share [Abstract]  
Summary of Earnings Per Common Share
         
    Three months ended September 30,   Nine months ended September 30,
     2013   2012   2013   2012
     (In thousands, except per share data)
Numerator:
                                   
Net income   $ 1,226     $ 1,307     $ 3,352     $ 4,304  
Preferred stock dividends     53       251       157       776  
Net income available to common shareholders   $ 1,173     $ 1,056     $ 3,195     $ 3,528  
Denominator:
                                   
Weighted average common shares outstanding (basic)     18,784       19,275       18,995       19,844  
Effect of stock options     94       76       91       60  
Weighted average common shares outstanding (diluted)     18,878       19,351       19,086       19,904  
Earnings per common share:
                                   
Basic   $ 0.06     $ 0.05     $ 0.17     $ 0.18  
Diluted     0.06       0.05       0.17       0.18