PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 930,768,000	$ 415,888,000	[1]
Land	88,509,000	70,373,000	[1]
Less: accumulated depreciation, amortization and accretion	(61,132,000)	(28,317,000)	[1]
Property, plant and equipment, net	958,145,000	457,944,000	[1]
Assets not subject to depreciation, amortization and accretion	138,600,000	55,200,000
Depreciation expense related to property, plant and equipment	33,200,000	18,100,000		$ 3,500,000
Capitalized internal costs	5,100,000	0		$ 0
Capitalized interest related to property, plant and equipment	1,800,000
Produced water disposal systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	600,797,000	220,084,000
Losses related to weather damage	7,500,000
Expect insurance proceeds on damage	6,000,000.0
Net loss related to weather damage	$ 1,500,000
Crude oil gathering systems
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)	30 years
Property, plant and equipment, gross	$ 129,658,000	66,760,000
Natural gas gathering and compression systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 98,426,000	60,350,000
Sourced water gathering systems
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)	30 years
Property, plant and equipment, gross	$ 101,887,000	$ 68,694,000
Minimum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)	10 years
Minimum | Produced water disposal systems
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)	10 years
Minimum | Natural gas gathering and compression systems
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)	10 years
Maximum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)	30 years
Maximum | Produced water disposal systems
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)	30 years
Maximum | Natural gas gathering and compression systems
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)	30 years

[1] See Note 1 for information regarding the basis of financial statement presentation.