v3.20.1

FAIR VALUE OF FINANCIAL INSTRUMENTS - Non-Recurring Fair Value Measurements (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2019
Fair Value Disclosures [Abstract] |  |  |
Goodwill, impairment loss | $ 0 | $ 537,400 | $ 537,353
Goodwill, impairment loss, net of tax |  | 519,600 |
Impairment charge related to ROU asset impairment |  | 6,000 |
Impairment of property and equipment |  | $ 2,200 |

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