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Other non-current liabilities and employee future benefits - Additional Information (Details)
 12 Months Ended
Dec. 31, 2023
USD ($)
plan
Dec. 31, 2022
USD ($)
Disclosure of net defined benefit liability (asset) [line items]    
Upward adjustments / increase in provision $ 449,000  
Effect of movements in exchange rates 24,000 $ 12,000
Estimate of contributions expected to be paid to plan for next annual reporting period $ 0  
Number of plans | plan 2  
Other current liabilities    
Disclosure of net defined benefit liability (asset) [line items]    
Estimated future cash flows discounted percentage 3.17% 3.41%
Upward adjustments / increase in provision   $ 0
New additions to provision $ 43,000 44,000
Effect of movements in exchange rates 40,000 (117,000)
Undiscounted amount of the estimated cash flows 2,337,000 1,805,000
Net defined benefit pension plan liability    
Disclosure of net defined benefit liability (asset) [line items]    
Settlements $ 0 0
Net defined benefit pension plan liability | Fair value of plan assets    
Disclosure of net defined benefit liability (asset) [line items]    
Percentage of liabilities settled 1  
Settlements $ (7,326,000) $ 0
Actuarial assumption of medical cost trend rates    
Disclosure of net defined benefit liability (asset) [line items]    
Percentage of reasonably possible decrease in actuarial assumption 1.00%  
Percentage of reasonably possible increase in actuarial assumption 1.00%