COMMITMENTS AND CONTINGENCIES - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) hp	Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Deposit on property and equipment	$ 6.1
Supplies expense, estimated indirect benefit to the former executive officer	1.5	$ 0.4
Notes issued	1.5	1.8
Severance expense	$ 2.0
DuraStim
Property, Plant and Equipment [Line Items]
Purchase options, property and equipment | hp	108,000
Ancillary Equipment
Property, Plant and Equipment [Line Items]
Deposit on property and equipment	$ 1.7
Corporate Offices
Property, Plant and Equipment [Line Items]
Deposit on property and equipment	2.7
SandCo
Property, Plant and Equipment [Line Items]
Purchase and supply agreement	$ 44.3	$ 10.3
LandCo | Former executive officer
Property, Plant and Equipment [Line Items]
Noncontrolling interest (in percentage)	44.00%