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ENVIRONMENTAL AND NATURAL RESOURCE DAMAGE LIABILITIES (Tables)
3 Months Ended
Mar. 31, 2021
Environmental Remediation Obligations [Abstract]  
Schedule of Environmental Loss Contingencies by Site
Changes in environmental and NRD liabilities from December 31, 2020 to March 31, 2021 are shown below:
Port Gamble, WA
Non-current portion at December 31, 2020
$10,615
Plus: Current portion1,026
Total Balance at December 31, 2020
11,641
Expenditures(111)
Total Balance at March 31, 2021
11,530
Less: Current portion(930)
Non-current portion at March 31, 2021
$10,600