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Property, plant and equipment - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [line items]      
Depreciation of right-of-use assets $ 2,087,167 $ 1,542,566 $ 583,835
Interest expenses on lease liabilities (note 8(a)) 244,085 205,915 49,400
Expense relating to short-term leases or leases of low-value assets 831,631 1,019,937 429,691
Additions to right-of-use assets 833,538 5,370,122 949,810
Properties      
Disclosure of detailed information about property, plant and equipment [line items]      
Depreciation of right-of-use assets 2,039,815 1,535,333 575,787
Office and lab equipment      
Disclosure of detailed information about property, plant and equipment [line items]      
Depreciation of right-of-use assets $ 47,352 $ 7,233 $ 8,048
Lease term 5 years    
Minimum | Properties      
Disclosure of detailed information about property, plant and equipment [line items]      
Lease term 2 years    
Maximum | Properties      
Disclosure of detailed information about property, plant and equipment [line items]      
Lease term 10 years