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COMMITMENTS AND CONTINGENCIES - Schedule of Environmental Liability (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Accrual for Environmental Loss Contingencies [Roll Forward] |  |
Ending balance | $ 5,887 |
North Country Environmental Services Landfill |  |
Accrual for Environmental Loss Contingencies [Roll Forward] |  |
Beginning balance | 0 |
Accretion expense | 0 |
Obligations incurred | 924 |
Ending balance | 924 | $ 0
Southbridge Landfill |  |
Accrual for Environmental Loss Contingencies [Roll Forward] |  |
Beginning balance | 4,261 | 4,596
Accretion expense | 109 | 118
Obligations incurred | 0 | 28
Revisions in estimates | 0 | (188)
Obligations settled | (281) | (293)
Ending balance | 4,089 | 4,261
Potsdam Environmental Remediation Liability |  |
Accrual for Environmental Loss Contingencies [Roll Forward] |  |
Beginning balance | 939 | 1,151
Obligations settled | (65) | (212)
Ending balance | $ 874 | $ 939

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- Definition Accrual For Environmental Loss Contingencies, Obligations Incurred + References No definition available. + Details
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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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- Definition Amount of expense for newly incurred environmental loss contingencies. Includes, but is not limited to, remediation expense and interest accretion. + 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 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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