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Warranty
 3 Months Ended
Apr. 30, 2012
Warranty [Abstract]  
Warranty

Note 11. Warranty

The Company accrues an estimate of its exposure to warranty claims based upon both current and historical product sales data and warranty costs incurred. The Company’s products carry a ten-year warranty. The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary. The warranty liability is included in accrued liabilities in the accompanying consolidated balance sheets.

The following is a summary of the Company’s warranty claim activity for the three months ended April 30, 2012 and 2011 (in thousands):

 

                 
    April 30,  
    2012     2011  

Beginning balance

   $ 1,400     $ 2,300  

Provision

     111       82  

Costs incurred

     (111 )      (232 ) 
   

 

 

    

 

 

  

Ending balance

   $ 1,400     $ 2,150