Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable (Details)

v3.21.2
Accounts Receivable (Details) - USD ($)
3 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2019
May 31, 2021
Receivables [Abstract]        
Accounts Receivable, after Allowance for Credit Loss, Current $ 524,629     $ 684,935
Accounts Receivable, Credit Loss Expense (Reversal) 0 $ 5,992 $ 5,992  
Accounts Receivable, Allowance for Credit Loss, Writeoff 5,922      
Accounts Receivable, Allowance for Credit Loss $ 0