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Commitments and contingencies (Details) - USD ($) $ in Thousands	146 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Site Contingency [Line Items]
Environmental accrual	$ 7,251	$ 7,265
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other	Accrued expenses and other
Total future payments	$ 244,867
Payments in 2024	102,713
Payments in 2025	97,458
Payments in 2026	35,742
Payments in 2027	8,954
Payments in 2028 - 2032	0
Multiple sites
Site Contingency [Line Items]
Environmental accrual	1,992	$ 1,840
Tegrant Holding Corporation
Site Contingency [Line Items]
Payment towards remediation of sites	2,141
Tegrant Holding Corporation | Spartanburg, South Carolina Site
Site Contingency [Line Items]
Environmental accrual	$ 5,259	$ 5,425

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