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Marketable Securities (Tables)
9 Months Ended
Feb. 28, 2022
Investments, Debt and Equity Securities [Abstract]  
Schedule of major categories of assets measured at fair value on a recurring basis
February 28, 2022  Level 1   Level 2   Level 3   Total 
Equity Securities  $38,160   $
-
   $
-
   $38,160 
                     
May 31, 2021    

Level 1

    

Level 2

    

Level 3

    

Total

 
Equity Securities  $45,696   $-   $-   $45,696 

 

Schedule of marketable securities
February 28, 2022  Amortized
Cost
   Gross
Unrealized
Holding
Gains
   Gross
Unrealized
Holding
Losses
   Recorded
Value
 
Equity Securities  $16,866   $21,294   $
-
   $38,160 

 

May 31, 2021  Amortized
Cost
   Gross
Unrealized
Holding
Gains
   Gross
Unrealized
Holding
Losses
   Recorded
Value
 
Equity Securities  $16,866   $28,830   $
-
   $45,696