ENVIRONMENTAL AND NATURAL RESOURCE DAMAGE LIABILITIES - Changes in Environmental and NRD Liabilities (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2025 USD ($)
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance, non-current portion	$ 3,610
Beginning balance, plus: current portion	4,283
Beginning balance	7,893
Expenditures charged to liabilities	(4,109)
Increase to liabilities	2,688
Ending balance	6,472
Ending balance, less: current portion	(2,284)
Ending balance, non-current portion	$ 4,188
Environmental Loss Contingency, Current, Statement Of Financial Position, Extensible Enumeration, Not Disclosed Flag	environmental and NRD liabilities
Environmental Loss Contingency, Noncurrent, Statement Of Financial Position, Extensible Enumeration, Not Disclosed Flag	environmental and NRD liabilities
Environmental Loss Contingency, Statement Of Financial Position, Extensible Enumeration, Not Disclosed Flag	environmental and NRD liabilities