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5. PRODUCT WARRANTIES (Tables)
 12 Months Ended
May. 31, 2015
Product Warranties Disclosures [Abstract]  
Liability for product warranties

     Following is a summary of changes in the Company’s liability for product warranties during the fiscal years ended May 31, 2015 and 2014 (in thousands):

 

    May 31,  
    2015     2014  
             
Balance at the beginning of the year   $ 223     $ 222  
Accruals for warranties issued during the year     150       297  
Settlement made during the year (in cash or in kind)     (236 )     (296 )
                 
Balance at the end of the year   $ 137     $ 223