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Lease obligations - Schedule of maturity analysis of operating lease payments (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of maturity analysis of operating lease payments [line items]        
Total undiscounted lease payments payable $ 275,180      
Less: impact of present value (19,824)      
Balance as at December 31, 2021 255,356 $ 125,962 $ 152,619 $ 183,424
Less than one year        
Disclosure of maturity analysis of operating lease payments [line items]        
Total undiscounted lease payments payable 136,318      
One to two years        
Disclosure of maturity analysis of operating lease payments [line items]        
Total undiscounted lease payments payable 138,862      
Therafter        
Disclosure of maturity analysis of operating lease payments [line items]        
Total undiscounted lease payments payable $ 0