INDEBTEDNESS - Estimated Fair Values of Debt Obligations (Details) - Senior Notes - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020
Debt Instrument [Line Items]
Total debt instruments	$ 1,284,635
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	1,284,635
First lien term loan
Debt Instrument [Line Items]
Total debt instruments	891,244
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	891,244
Second lien notes
Debt Instrument [Line Items]
Total debt instruments	393,391
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	393,391
Markets for Identical Item (Level 1)
Debt Instrument [Line Items]
Total debt instruments	0
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	0
Markets for Identical Item (Level 1) | First lien term loan
Debt Instrument [Line Items]
Total debt instruments	0
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	0
Markets for Identical Item (Level 1) | Second lien notes
Debt Instrument [Line Items]
Total debt instruments	0
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	0
Significant Other Observable Inputs (Level 2)
Debt Instrument [Line Items]
Total debt instruments	892,764
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	892,764
Significant Other Observable Inputs (Level 2) | First lien term loan
Debt Instrument [Line Items]
Total debt instruments	892,764
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	892,764
Significant Other Observable Inputs (Level 2) | Second lien notes
Debt Instrument [Line Items]
Total debt instruments	0
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	0
Significant Unobservable Inputs (Level 3)
Debt Instrument [Line Items]
Total debt instruments	417,910
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	417,910
Significant Unobservable Inputs (Level 3) | First lien term loan
Debt Instrument [Line Items]
Total debt instruments	0
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, end of period	0
Significant Unobservable Inputs (Level 3) | Second lien notes
Debt Instrument [Line Items]
Total debt instruments	339,371	$ 339,371
Debt Instrument, Changes In Long-Term Debt [Roll Forward]
Total debt instruments, beginning of period	339,371	411,119
Change in fair value	78,539	(71,748)
Total debt instruments, end of period	$ 417,910	$ 339,371