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FAIR VALUE MEASUREMENTS (Assets and Liabilities Valuation Level) (Details) - USD ($) $ in Thousands | 3 Months Ended | 4 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Assets: |  |  |  |  |
Contingent consideration arrangement | $ 5,300 |  | $ 5,300 |  |
Liabilities: |  |  |  |  |
Contingent consideration, gain (loss) due to change in value | 1,200 | $ 200 | 100 | $ 3,100 |
Level 1 |  |  |  |  |
Assets: |  |  |  |  |
Derivative Instruments | 0 |  | 0 |  | $ 0
Contingent consideration arrangement | 0 |  | 0 |  | 0
Total assets | 0 |  | 0 |  | 0
Liabilities: |  |  |  |  |
Derivative Instruments | 0 |  | 0 |  | 0
Level 2 |  |  |  |  |
Assets: |  |  |  |  |
Derivative Instruments | 3,103 |  | 3,103 |  | 27,468
Contingent consideration arrangement | 0 |  | 0 |  | 0
Total assets | 3,103 |  | 3,103 |  | 27,468
Liabilities: |  |  |  |  |
Derivative Instruments | 833,657 |  | 833,657 |  | 48,245
Level 3 |  |  |  |  |
Assets: |  |  |  |  |
Derivative Instruments | 0 |  | 0 |  | 0
Contingent consideration arrangement | 5,300 |  | 5,300 |  | 6,200
Total assets | 5,300 |  | 5,300 |  | 6,200
Liabilities: |  |  |  |  |
Derivative Instruments | $ 0 |  | $ 0 |  | $ 0

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