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DERIVATIVE AND HEDGING ACTIVITIES - (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended		12 Months Ended
	Oct. 01, 2019	Dec. 31, 2019	Oct. 01, 2019	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative and hedging activities
Financial Designation, Predecessor and Successor [Fixed List]	Predecessor	Successor	Predecessor	Predecessor	Predecessor	Predecessor
Asset derivative contracts		$ 5,219			$ 69,717
Liability derivative contracts		(12,923)			(12,907)
Derivatives not designated as hedging contracts
Derivative and hedging activities
Asset derivative contracts		5,219			69,717
Liability derivative contracts		(12,923)			(12,907)
Derivatives not designated as hedging contracts \| Commodity contracts \| Current assets - receivables from derivative contracts
Derivative and hedging activities
Asset derivative contracts		4,995			57,280
Derivatives not designated as hedging contracts \| Commodity contracts \| Other noncurrent assets - receivables from derivative contracts
Derivative and hedging activities
Asset derivative contracts		224			12,437
Derivatives not designated as hedging contracts \| Commodity contracts \| Current liabilities - liabilities from derivative contracts
Derivative and hedging activities
Liability derivative contracts		(8,069)			(3,768)
Derivatives not designated as hedging contracts \| Commodity contracts \| Other noncurrent liabilities - liabilities from derivative contracts
Derivative and hedging activities
Liability derivative contracts		$ (4,854)			$ (9,139)