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Right-of-use asset (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of quantitative information about right-of-use assets [abstract]      
Impairment loss on right of use asset $ 0 $ 89,860 $ 50,888
Right-of-use asset balance $ 168,307 $ 0 $ 95,851