Annual report pursuant to Section 13 and 15(d)

RIGHT TO USE ASSETS AND LIABILITIES - OPERATING LEASES (Details) - Lease, Cost

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RIGHT TO USE ASSETS AND LIABILITIES - OPERATING LEASES (Details) - Lease, Cost - USD ($)
 12 Months Ended 24 Months Ended
May 31, 2021
May 31, 2020
May 31, 2021
Jun. 01, 2019
RIGHT TO USE ASSETS AND LIABILITIES - OPERATING LEASES (Details) - Lease, Cost [Line Items]        
Right of Use Assets $ 2,250,009 $ 1,403,429 $ 2,250,009 $ 3,891,437
Lease liability 2,266,419   2,266,419 $ 3,848,038
Less: current portion (287,125) (336,900) (287,125)  
Lease liability, non-current 1,979,294 1,136,151 1,979,294  
Amount amortized (379,358) (1,202,259) (1,581,619)  
Amount amortized (341,035) $ (1,300,392) (1,641,428)  
Building [Member]        
RIGHT TO USE ASSETS AND LIABILITIES - OPERATING LEASES (Details) - Lease, Cost [Line Items]        
Lease liability $ 2,250,009   $ 2,250,009