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ENVIRONMENTAL AND NATURAL RESOURCE DAMAGE LIABILITIES - Narrative (Details)
$ in Thousands
12 Months Ended
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