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Bank Indebtedness - Additional Information (Details)
12 Months Ended
May 31, 2021
CAD ($)
Lineofcredit
May 31, 2021
EUR (€)
Lineofcredit
May 31, 2021
USD ($)
May 31, 2021
CAD ($)
May 31, 2021
EUR (€)
Line Of Credit Facility [Line Items]          
Operating line of credit $ 1,000        
Line of credit     $ 0    
CC Pharma          
Line Of Credit Facility [Line Items]          
Line of credit       $ 8,717,000 € 7,000
Number of operating lines of credit | Lineofcredit 2 2      
Available credit amount | €   € 8,500      
Four Twenty Corporation (“420”) | Revolving Credit Facility          
Line Of Credit Facility [Line Items]          
Line of credit     $ 0    
Operating Lines of Credit One | CC Pharma          
Line Of Credit Facility [Line Items]          
Operating line of credit | €   5,000      
Operating Lines of Credit Two | CC Pharma          
Line Of Credit Facility [Line Items]          
Operating line of credit | €   € 3,500      
Prime Rate          
Line Of Credit Facility [Line Items]          
Interest rate 7.50% 7.50%      
Euro Over Night Index Average Plus | Operating Lines of Credit One | CC Pharma          
Line Of Credit Facility [Line Items]          
Interest rate     1.79% 1.79% 1.79%
Euro Interbank Offered Rate Plus | Operating Lines of Credit Two | CC Pharma          
Line Of Credit Facility [Line Items]          
Interest rate     3.682% 3.682% 3.682%
EURIBOR | Four Twenty Corporation (“420”) | Revolving Credit Facility          
Line Of Credit Facility [Line Items]          
Line of credit     $ 20,000,000