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5. ACCOUNTS RECEIVABLE
 12 Months Ended
May 31, 2021
Receivables [Abstract]  
5. ACCOUNTS RECEIVABLE

5. ACCOUNTS RECEIVABLE 

 

     Accounts receivable comprise (in thousands):

 

     May 31,  
    2021     2020  
Accounts receivable   $ 5,202     $ 3,717  
Less: Allowance for doubtful accounts     --       --  
    $ 5,202     $ 3,717  

 

    Accounts receivable represent customer trade receivables. As of May 31, 2021 and 2020, there were no allowances for doubtful accounts.