RECAPITALIZATION TRANSACTION - Summary of Shares Issued and Outstanding by Class of Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended	7 Months Ended	12 Months Ended
	Nov. 09, 2018	Aug. 08, 2018	Nov. 08, 2018	Aug. 07, 2018	Dec. 31, 2018	Dec. 31, 2016
Class A Common Stock
Movement In Common Stock Outstanding [Roll Forward]
Beginning balance, shares (in shares)	67,616,277	65,496,277	65,496,277	37,732,112	37,732,112
Redeemed (in shares)				(29,469,858)	(29,469,858)
Issued (in shares)	7,313,028
Forfeited (in shares)			0
Converted (in shares)			2,120,000
Ending balance, shares (in shares)	74,929,305		67,616,277	65,496,277	74,929,305
Common stock, par value (in USD per share)					$ 0.0001
Stock redeemed value					$ 298.8
Stock issued during period related to contribution agreement	7,313,028
Class B Common Stock
Movement In Common Stock Outstanding [Roll Forward]
Beginning balance, shares (in shares)	0	9,433,028	9,433,028	9,433,028	9,433,028
Redeemed (in shares)				0
Forfeited (in shares)		(7,313,028)	(7,313,028)
Converted (in shares)			(2,120,000)		(2,120,000)
Ending balance, shares (in shares)	0		0	9,433,028
Common stock, par value (in USD per share)						$ 0.0001
Class C Common Stock
Movement In Common Stock Outstanding [Roll Forward]
Beginning balance, shares (in shares)	0	0	0	0	0
Redeemed (in shares)				0
Issued (in shares)	250,000,000
Forfeited (in shares)			0
Ending balance, shares (in shares)	250,000,000		0	0	250,000,000
Common stock, par value (in USD per share)					$ 0.0001
Stock issued during period related to contribution agreement	250,000,000
Private Placement | Class A Common Stock
Movement In Common Stock Outstanding [Roll Forward]
Issued (in shares)	57,234,023			57,234,023
Private Placement | Class B Common Stock
Movement In Common Stock Outstanding [Roll Forward]
Issued (in shares)				0
Private Placement | Class C Common Stock
Movement In Common Stock Outstanding [Roll Forward]
Issued (in shares)				0