SUPPLEMENTAL BALANCE SHEET AND CASH FLOW INFORMATION - Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Prepaid expenses:
Electric deposits	$ 273	$ 0
Prepaid insurance	655	2,818
Warrant asset	57	477
Other	768	569
Total	$ 1,753	$ 3,864
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense and Other Assets, Current	Prepaid Expense and Other Assets, Current
Accrued expenses:
Accrued interest	$ 1,026	$ 1,026
Other	3,703	5,090
Total	$ 4,729	$ 6,116