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15. SEGMENT INFORMATION (Tables)
12 Months Ended
May 31, 2020
Segment Reporting [Abstract]  
Property and equipment by geographic region

    Property and equipment information is based on the physical location of the assets. The following table presents property and equipment information for geographic areas (in thousands):

 

   May 31,
   2020  2019
United States  $662   $1,005 
Asia   1    40 
Europe   --    -- 
   $663   $1,045