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Revenue recognition - Narrative (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Concentration Risk [Line Items]
Number of reportable segments | segment	3
Number of operating segments | segment	3
Revenue, remaining performance obligation, amount	$ 393,200,000
Contract with customer, asset, after allowance for credit loss, current	9,700,000	$ 21,900,000
Contract with customer, liability, current	4,800,000	27,200,000
Provisions for expected credit losses	5,300,000	2,100,000	$ 300,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Concentration Risk [Line Items]
Revenue, remaining performance obligation, amount	$ 348,200,000
Revenue, remaining performance obligation, expected timing of satisfaction, period	24 months
Leases
Concentration Risk [Line Items]
Leases	$ 1,400,000	$ 5,700,000	$ 4,900,000
Lessor, operating lease, payment to be received, year one	2,200,000
Lessor, operating lease, payment to be received, year two	2,300,000
Lessor, operating lease, payment to be received, year three	900,000
Lessor, operating lease, payment to be received, year four	900,000
Lessor, operating lease, payment to be received, year five	0
Lessor, operating lease, payment to be received, after year five	$ 0
Non-US
Concentration Risk [Line Items]
Lessee, operating lease, remaining lease term	2 years 1 month 6 days
Revenue from Contract with Customer | Geographic Concentration Risk | United States
Concentration Risk [Line Items]
Concentration risk percentage	79.00%	58.00%	79.00%
USG | Leases
Concentration Risk [Line Items]
Leases	$ 0	$ 0	$ 0
USG | Revenue from Contract with Customer | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk percentage	39.00%	38.00%	43.00%
Customer Two | Revenue from Contract with Customer | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk percentage			10.00%

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