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Income Taxes (Tables)
3 Months Ended
Apr. 30, 2013
Income Taxes [Abstract]  
Company's income tax expense relating to continuing operations
                 
    Three Months Ended April 30,  
    2013     2012  

Computed expected income tax expense

  $ 3,801,000     $ 2,402,000  

State income taxes, net of federal tax benefit

    332,000       276,000  

Permanent differences, net

    (237,000     (162,000

Other, net

    24,000       1,000  
   

 

 

   

 

 

 
    $ 3,920,000     $ 2,517,000