EARNINGS PER SHARE/UNIT (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended			5 Months Ended	6 Months Ended
	Jun. 30, 2018	May 31, 2018	Jun. 30, 2019	Mar. 31, 2019	Mar. 31, 2018	May 31, 2018	Jun. 30, 2019
Earnings Per Share Disclosure [Line Items]
Net loss	$ (538)		$ (60,907)	$ (35,775)			$ (96,682)
Net loss available to common stockholders/limited partners	$ (538)		$ (60,907)				$ (96,682)
Weighted average limited partner units outstanding:
Weighted average common shares/units outstanding, basic	10,000		10,064				10,053
Weighted average common shares/units outstanding, diluted	10,000		10,064				10,053
Basic and diluted earnings per share / unit:
Basic, share/unit	$ (0.05)		$ (6.05)				$ (9.62)
Diluted, share/unit	$ (0.05)		(6.05)				(9.62)
Exercise price of warrants			$ 37.48				$ 37.48
Restricted stock units
Basic and diluted earnings per share / unit:
Equity awards not included in computation of diluted net income (loss) per limited partner unit			241,976				241,976
Antidilutive warrants
Basic and diluted earnings per share / unit:
Equity awards not included in computation of diluted net income (loss) per limited partner unit	800,000		800,000				800,000
Predecessor
Earnings Per Share Disclosure [Line Items]
Net loss		$ (595,076)			$ (15,449)	$ (610,525)
General partner's 2% interest in net loss		11,902				12,211
Net loss available to common stockholders/limited partners		$ (583,174)				$ (598,314)
Weighted average limited partner units outstanding:
Weighted average common shares/units outstanding, basic		49,369				49,369
Weighted average common shares/units outstanding, diluted		49,369				49,369
Basic and diluted earnings per share / unit:
Basic, share/unit		$ (11.81)				$ (12.12)
Diluted, share/unit		$ (11.81)				$ (12.12)