SUPPLEMENTAL BALANCE SHEET AND CASH FLOW INFORMATION - Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Prepaid expenses:
Electric deposits	$ 1,400	$ 1,400
Prepaid insurance	1,499	3,822
Other	678	1,044
Total	3,577	6,266
Accrued expenses:
Accrued interest	1,031	1,741
Accrued compensation	1,829	1,535
Accrued non-income taxes	1,843	1,932
Other	2,747	6,119
Total	$ 7,450	$ 11,327