PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,037,264		$ 1,037,264		$ 930,768
Less: accumulated depreciation, amortization and accretion	(81,572)		(81,572)		(61,132)
Land	88,309		88,309		88,509
Total property, plant and equipment, net	1,044,001		1,044,001		958,145
Property, plant and equipment, assets	83,500		83,500		138,600
Depreciation expense	10,000	$ 8,200	20,500	$ 16,200
Produced water disposal systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment	678,883		$ 678,883		600,797
Crude oil gathering systems
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)			30 years
Property, plant and equipment	133,856		$ 133,856		129,658
Natural gas gathering and compression systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment	113,045		$ 113,045		98,426
Fresh water gathering systems
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives (in years)			30 years
Property, plant and equipment	$ 111,480		$ 111,480		$ 101,887
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 | 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