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Lease liability - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about property, plant and equipment [line items]    
Payments of lease liabilities $ 4,013 $ 3,322
Deferred gain on finance lease liability $ 485 $ 902
Bottom of range    
Disclosure of detailed information about property, plant and equipment [line items]    
Interest rate 2.95%  
Top of range    
Disclosure of detailed information about property, plant and equipment [line items]    
Interest rate 8.56%