ENVIRONMENTAL NATURAL RESOURCE DAMAGE LIABILITIES - Schedule of Environmental NRD Liabilities (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($)
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	$ 0
Liabilities assumed in merger with Pope Resources	13,003
Expenditures	(1,362)
Ending balance	11,641
Less: Current portion	1,026
Non-current portion at December 31, 2020	$ 10,615

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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