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14. SEGMENT INFORMATION (Tables)
12 Months Ended
May 31, 2019
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,
   2019  2018
United States  $1,005   $1,156 
Asia   40    40 
Europe   —      7 
   $1,045   $1,203