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DIVESTITURES AND SALES (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Impact of divestiture on goodwill |  |  | $ 4,685 | $ 4,944 |
Proceeds from sale of property, plant, and equipment | $ 3,200 | $ 2,700 | 17,115 | 785 | $ 17,776
Gain (loss) on disposition of property plant equipment | 2,300 | $ 1,700 | 1,567 | $ 109 | $ 10,148
Term Loan Credit Agreement | Senior Secured Credit Facility |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Repayments of long-term debt |  |  | $ 11,200 |  |
Beall Tank Trailers | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Proceeds from divestiture of businesses | 11,200 |  |  |  |
Loss on divestiture | 2,100 |  |  |  |
Impact of divestiture on goodwill | $ 4,700 |  |  |  |

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