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Earnings per Common Share:
9 Months Ended
Sep. 30, 2011
Earnings per Common Share: [Abstract] 
Earnings per Common Share:
(5) Earnings per Common Share:
Basic earnings per share are net income available to common shareholders divided by the weighted average number of common shares outstanding during the period. Diluted earnings per common share include the dilutive effect, if any, of additional potential common shares issuable under stock options, computed using the treasury stock method.
                                 
    Three months ended     Nine months ended  
    September 30,     Septmeber 30,  
    2011     2010     2011     2010  
Basic
                               
Net income (loss)
  $ 1,193     $ (1,393 )   $ 2,469     $ (1,616 )
Preferred stock dividends and discount accretion
    293       289       881       867  
 
                       
Net income (loss) available to common shareholders
  $ 900     $ (1,682 )   $ 1,588     $ (2,483 )
 
                       
Weighted average common shares outstanding
    7,707,917       7,707,917       7,707,917       7,707,917  
 
                       
Basic earnings per common share
  $ 0.12     $ (0.22 )   $ 0.21     $ (0.32 )
 
                       
 
                               
Diluted
                               
Net income (loss)
  $ 1,193     $ (1,393 )   $ 2,469     $ (1,616 )
Preferred stock dividends and discount accretion
    293       289       881       867  
 
                       
Net income (loss) available to common shareholders
  $ 900     $ (1,682 )   $ 1,588     $ (2,483 )
 
                       
Weighted average common shares outstanding for basic earnings per common share
    7,707,917       7,707,917       7,707,917       7,707,917  
Add: Dilutive effects of assumed exercises of stock options
                       
 
                       
Average shares and dilutive potential common shares outstanding
    7,707,917       7,707,917       7,707,917       7,707,917  
 
                       
 
                               
Diluted earnings per common share
  $ 0.12     $ (0.22 )   $ 0.21     $ (0.32 )
 
                       
Stock options for 29,500 common shares and warrants for 469,312 common shares were not considered in computing diluted earnings per common share for the three and nine-month periods ended September 30, 2011 and September 30, 2010 because they were anti-dilutive.