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Other noncurrent liabilities - Summary of Other Noncurrent Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Other noncurrent liabilities |  |
Reserve for uncertain tax positions |  | $ 4,778
OPEB | $ 424 | 451
Insurance claims and expenses | 667 | 685
Other | 188 | 269
Total | $ 1,279 | $ 6,183

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- Definition Amount recognized for uncertainty in income taxes classified as noncurrent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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