ENVIRONMENTAL AND NATURAL RESOURCE DAMAGE LIABILITIES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Increase in liabilities		$ 1,421
Minimum | Millsite Cleanup And 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 | Millsite Cleanup And Natural Resource Damages Restoration
Property, Plant and Equipment [Line Items]
Natural resource damages restoration monitoring term (in years)		2 years
Maximum | Port Gamble Location
Property, Plant and Equipment [Line Items]
Natural resource damages restoration monitoring term (in years)	20 years