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Net finance costs - Schedule of net finance costs (Details) - CAD ($)
 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2019
Interest expense from:        
Unsecured loan $ 0 $ 321,313 $ 4,527  
Accretion cost - accrued royalties liability 0 159,451 64,537  
Lease obligations 31,242 30,112 33,872  
Related party loans 8,448 0 4,581  
CEBA term loan 0 0 4,481  
2019 convertible notes 44,899 0 0  
Other 5,885 1,114 4,115  
Total interest expenses 90,474 511,990 116,113  
Interest income (2,454) (5,988) (4,848)  
Gain on termination of lease obligations (17,527) 0 0  
Gain on government grant (9,096) 0 (3,514)  
Net finance costs $ 61,397 $ 506,002 $ 107,751 $ 245,147