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Securities Available for Sale (Tables)
12 Months Ended
Jan. 31, 2013
Securities Available for Sale [Abstract]  
Fair value, amortized cost and gross unrealized gains and losses of the securities
                                 
    Amortized
Cost
    Gross
Unrealized
Gains
    Gross
Unrealized
Losses
    Fair Value  
(In thousands)                        

January 31, 2013

                               

State and Municipal Obligations

  $ 8,499     $ 10     $ —       $ 8,509  
   

 

 

   

 

 

   

 

 

   

 

 

 
         
    Amortized
Cost
    Gross
Unrealized
Gains
    Gross
Unrealized
Losses
    Fair Value  

January 31, 2012

                               

State and Municipal Obligations

  $ 11,313     $ 23     $ —       $ 11,336  
   

 

 

   

 

 

   

 

 

   

 

 

 
Contractual maturity dates of securities
                 
    January 31,  
    2013     2012  
(In thousands)            

Less than one year

  $ 5,986     $ 8,494  

One to three years

    2,523       2,842  
   

 

 

   

 

 

 
    $ 8,509     $ 11,336