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7. SEGMENT INFORMATION (Tables)
3 Months Ended
Aug. 31, 2016
Segment Reporting [Abstract]  
Company's operations in different geographic areas

    The following presents information about the Company’s operations in different geographic areas. Net sales are based upon ship-to location (in thousands).

 

   United         
   States  Asia  Europe  Total
Three months ended August 31, 2016:                    
Net sales  $3,164   $1,910   $244   $5,318 
Property and equipment, net   733    42    14    789 
                     
Three months ended August 31, 2015:                    
Net sales  $718   $5,381   $534   $6,633 
Property and equipment, net   418    34    13    465