Commitments and contingencies - Additional Information (Details) $ in Thousands |
Jun. 30, 2026
USD ($)
site
|
Dec. 31, 2025
USD ($)
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|---|---|---|
| Commitments and contingencies | ||
| Accrual for reasonably estimable environmental remediation and related matters | $ 12,729 | $ 13,040 |
| Environmental Remediation Sites NL Named As PRP Or Defendant | ||
| Commitments and contingencies | ||
| Accrual for reasonably estimable environmental remediation and related matters | $ 13,000 | |
| Number of sites associated with remediation and related costs | site | 27 | |
| Number of sites currently not able to reasonably estimate a range of costs | site | 5 | |
| Maximum | Environmental Remediation Sites NL Named As PRP Or Defendant | ||
| Commitments and contingencies | ||
| Upper end range, estimate costs for remediation and related matters | $ 38,000 |
| X | ||||||||||
- Definition Number of environmental remediation sites with reasonably estimable costs. No definition available.
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| X | ||||||||||
- Definition Number of environmental remediation sites without reasonably estimable costs. No definition available.
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| X | ||||||||||
- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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