SIGNIFICANT ACCOUNTING POLICIES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Sep. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Supplemental disclosure of non-cash activities:
Contribution of plant and equipment or deposits on plant and equipment to joint venture		$ 35,792
Deferred financing costs in accounts payable or other accrued liabilities			$ 1,351
Common stock issuance costs in accounts payable		250	140
Preferred stock issuance costs in other accrued liabilities or accounts payable			293
Purchases of and deposits on plant and equipment in accounts payable, accrued construction liabilities, other accrued liabilities and long-term debt		3,590	7,625
Investment in joint venture in other accrued liabilities, other amounts due to related parties and long-term debt		452	1,298
Convertible promissory notes converted to common stock		4,666
Increase to preferred stock liquidation preference from accumulating dividends			284
Convertible promissory note deferred issuance costs in accounts payable			$ 104
Common stock issued pursuant to operating lease amendment	$ 11,500
Common stock warrants issued for discount on long-term debt		16,036
Decrease to investment in joint venture and increase in plant and equipment for distribution or transfer of nonmonetary assets		6,867
Decrease to investment in joint venture due to bitcoin received as distribution from investee		4,943
Common stock reacquired in exchange for warrants		$ 12,479