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BUSINESS COMBINATIONS (Details) |  |  |  |  | 9 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 08, 2021 USD ($) employee proceeding | Jun. 29, 2021 USD ($) | Mar. 27, 2021 USD ($) | Apr. 17, 2020 USD ($) | Sep. 30, 2021 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Goodwill recognized |  |  |  |  | $ 15,860,000
Vertex Energy Inc |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Consideration to acquire assets |  | $ 140,000,000 |  |  |
March 27, 2021 Acquisition |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price to acquire business |  |  | $ 22,800,000 |  |
Goodwill recognized |  |  | $ 15,900,000 |  |
HydroChemPSC | Subsequent Event |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price to acquire business | $ 1,240,000,000 |  |  |  |
Annual revenues reported by acquired entity in 2020 | $ 715,300,000 |  |  |  |
HydroChemPSC | Subsequent Event | Minimum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill, acquired as percentage of purchase price | 40.00% |  |  |  |
HydroChemPSC | Subsequent Event | Maximum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill, acquired as percentage of purchase price | 50.00% |  |  |  |
HydroChemPSC | Subsequent Event | HydroChemPSC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Entity number of employees | employee | 4,500 |  |  |  |
Number of service locations (more than) | proceeding | 240 |  |  |  |
HydroChemPSC | Subsequent Event | 2028 Term Loans | Secured debt |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Debt Instrument, face amount | $ 1,000,000,000 |  |  |  |
Net proceeds from the company’s issuance | $ 983,000,000 |  |  |  |
2020 Acquisition |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price to acquire business |  |  |  | $ 8,800,000 |
Goodwill recognized |  |  |  | $ 1,400,000 |

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