Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable (Details)

v3.20.4
Accounts Receivable (Details) - USD ($)
3 Months Ended 6 Months Ended
Nov. 30, 2020
Nov. 30, 2019
Nov. 30, 2020
Nov. 30, 2019
May 31, 2020
Receivables [Abstract]          
Accounts Receivable, after Allowance for Credit Loss, Current $ 281,827   $ 281,827   $ 161,409
Accounts Receivable, Credit Loss Expense (Reversal) 0 $ 0 5,992 $ 0  
Accounts Receivable, Allowance for Credit Loss, Writeoff     7,668    
Proceeds, Accounts Receivable, Previously Written Off, Recovery     1,746    
Accounts Receivable, Allowance for Credit Loss $ 0 $ 0 $ 0 $ 0