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8. PRODUCT WARRANTIES (Tables)
3 Months Ended
Aug. 31, 2012
Product Warranties Tables  
Liability for product warranties

 Following is a summary of changes in the Company's liability for product warranties during the three months ended August 31, 2012 and 2011 (in thousands):

 

   Three Months Ended
   August 31,
   2012  2011
       
Balance at the beginning of the period  $91   $103 
           
Accruals for warranties issued          
 during the period   130    55 
Settlement made during the period          
 (in cash or in kind)   (106)   (58)
           
Balance at the end of the period  $115   $100