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REMEDIAL LIABILITIES (Additional Information) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) location
Site Contingency [Line Items] |  |
Changes in estimates recorded to consolidated statement of operations | $ 4,130 | $ (3,017)
Number of locations, accrual for environmental loss contingencies | location |  | 5
Accrual for environmental loss contingencies | 5.00% |
Remedial Liabilities for Inactive Sites |  |
Site Contingency [Line Items] |  |
Increase in estimated remedial liability | $ 3,300 |
Changes in estimates recorded to consolidated statement of operations | 2,873 | $ (913)
Remedial Liabilities for Superfund Sites |  |
Site Contingency [Line Items] |  |
Increase in estimated remedial liability | $ 1,800 |

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- Definition Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
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- Definition Increase (decrease) in the accrual for environmental loss contingencies during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
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