OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Accrued taxes other than income	$ 3,865	$ 165
Accrued operations and maintenance expense	1,775	926
Accrued capital costs	576	360
Accrued incentive compensation	365	1,466
Accrued professional and consulting fees	360	421
Other	3,381	2,275
Total other current liabilities	$ 10,322	$ 5,613	[1]

[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.