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ENVIRONMENTAL AND NATURAL RESOURCE DAMAGE LIABILITIES - Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 USD ($)
Property, Plant and Equipment [Line Items] |
Increase in liabilities | $ 5,747
Natural Resource Damages Restoration |
Property, Plant and Equipment [Line Items] |
Natural resource damages restoration monitoring term (in years) | 1 year
Minimum | Port Gamble Location |
Property, Plant and Equipment [Line Items] |
Natural resource damages restoration monitoring term (in years) | 15 years
Maximum | Port Gamble Location |
Property, Plant and Equipment [Line Items] |
Natural resource damages restoration monitoring term (in years) | 20 years

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- 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A + Details
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