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ENVIRONMENTAL REMEDIATION LIABILITIES (Details) $ in Millions | 5 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2020 USD ($)
Property, Plant and Equipment [Line Items] |  |
Payments for ongoing environmental remediation efforts | $ 0.2 |
Accrual for environmental remediation | $ 11.7 | $ 11.7
Minimum | Millsite Cleanup And Natural Resource Damages Restoration |  |
Property, Plant and Equipment [Line Items] |  |
Natural resource damages restoration monitoring term |  | 2 years
Minimum | Port Gamble Location |  |
Property, Plant and Equipment [Line Items] |  |
Natural resource damages restoration monitoring term |  | 10 years
Maximum | Millsite Cleanup And Natural Resource Damages Restoration |  |
Property, Plant and Equipment [Line Items] |  |
Natural resource damages restoration monitoring term |  | 3 years
Maximum | Port Gamble Location |  |
Property, Plant and Equipment [Line Items] |  |
Natural resource damages restoration monitoring term |  | 15 years

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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 + Details
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