REVENUE RECOGNITION - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Payment term	1 month
Revenue receivables	$ 11,152	$ 11,378	[1]
Sales revenue receivables from contracts with third parties	1,259	1,033	[1]
Affiliated Entity | Apache
Disaggregation of Revenue [Line Items]
Revenue receivables	$ 11,200	$ 11,400

[1] The Consolidated Balance Sheet as of December 31, 2020 has been derived from the audited consolidated financial statements, revised to reflect the Company’s fair value change of its underlying warrants. Refer to Note 1—Summary of Significant Accounting Policies, see the section titled Revision of Previously Issued Consolidated Financial Statements for Immaterial Adjustment for further information.