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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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount after tax of loss recognized that results from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount of loss from impairment of right-of-use asset from operating lease.

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