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Net Income per Common Share (Tables)
 6 Months Ended
Jul. 31, 2012
Net Income per Common Share [Abstract]  
Reconciliation between basic and diluted net income per share
                                 
    Three Months Ended
July 31,		     Six Months Ended
July 31,		  
    2012     2011     2012     2011  
    (In thousands, except per share amounts)  

Net income

   $ 1,362     $ 1,565     $ 514     $ 1,045  

Basic net income per share:

                                

Basic common shares

     19,995       19,848       19,928       19,784  
   

 

 

    

 

 

    

 

 

    

 

 

  

Basic net income per share

   $ 0.07     $ 0.08     $ 0.03     $ 0.05  
   

 

 

    

 

 

    

 

 

    

 

 

  

Diluted net income per share:

                                

Basic common shares

     19,995       19,848       19,928       19,784  

Stock options and restricted stock awards

     336       405       406       437  
   

 

 

    

 

 

    

 

 

    

 

 

  

Diluted common shares

     20,331       20,253       20,334       20,221  
   

 

 

    

 

 

    

 

 

    

 

 

  

Diluted net income per share

   $ 0.07     $ 0.08     $ 0.03     $ 0.05