Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable (Details)

v3.21.1
Accounts Receivable (Details) - USD ($)
3 Months Ended 9 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2021
Feb. 29, 2020
May 31, 2020
Receivables [Abstract]          
Accounts Receivable, after Allowance for Credit Loss, Current $ 277,437   $ 277,437   $ 161,409
Accounts Receivable, Credit Loss Expense (Reversal) 0 $ 0 5,927 $ 0  
Accounts Receivable, Allowance for Credit Loss, Writeoff     7,668    
Proceeds, Accounts Receivable, Previously Written Off, Recovery     1,741    
Accounts Receivable, Allowance for Credit Loss $ 0 $ 0 $ 0 $ 0