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ENVIRONMENTAL AND NATURAL RESOURCE DAMAGE LIABILITIES (Tables)
9 Months Ended
Sep. 30, 2021
Environmental Remediation Obligations [Abstract]  
Schedule of Environmental Loss Contingencies by Site
Changes in environmental and NRD liabilities from December 31, 2020 to September 30, 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 charged to liabilities(762)
Increase to liabilities71
Total Balance at September 30, 2021
10,950
Less: Current portion(1,095)
Non-current portion at September 30, 2021
$9,855