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Retirement plans - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of net defined benefit liability (asset) [line items]    
Retirement obligation (asset) $ 16,798,000 $ 16,973,000
Weighted average duration of defined benefit obligation 6 years  
Minimum funding requirement $ 0 $ 0
Discount rates 5.20% 5.30%
Defined contribution pension plans $ 12,300,000 $ 11,000,000.0
Discount rate    
Disclosure of net defined benefit liability (asset) [line items]    
Percentage of reasonably possible increase in actuarial assumption 1.00%  
Percentage of reasonably possible decrease in actuarial assumption 1.00%  
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption $ 2,300,000  
Unfunded | Chile    
Disclosure of net defined benefit liability (asset) [line items]    
Retirement obligation (asset) 19,200,000 20,200,000
Estimate of contributions expected to be paid to plan for next annual reporting period 11,000,000.0  
Unfunded | Egypt    
Disclosure of net defined benefit liability (asset) [line items]    
Retirement obligation (asset) 1,200,000 2,500,000
Estimate of contributions expected to be paid to plan for next annual reporting period 100,000  
Funded    
Disclosure of net defined benefit liability (asset) [line items]    
Retirement obligation (asset) (3,700,000) (5,300,000)
Estimate of contributions expected to be paid to plan for next annual reporting period 0  
Funded | Europe    
Disclosure of net defined benefit liability (asset) [line items]    
Retirement obligation (asset) (100,000) $ (400,000)
Estimate of contributions expected to be paid to plan for next annual reporting period $ 500,000