SIGNIFICANT ACCOUNTING POLICIES - Supplemental Cash Flow Information (Details) - USD ($)	1 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Supplemental disclosure of non-cash activities:
Right-of-use asset obtained in exchange for lease obligations		$ 0	$ 11,223,000
Contribution of plant and equipment or deposits on plant and equipment to joint venture		35,792,000	0
Common stock issuance costs in accounts payable		0	150,000
Preferred stock issuance costs in other accrued liabilities or accounts payable		0	293,000
Purchases of and deposits on plant and equipment in accounts payable, accrued construction liabilities, other accrued liabilities and long-term debt		6,081,000	10,100,000
Purchases of and deposits on plant and equipment with digital currency		269,000	0
Investment in joint venture in other accrued liabilities, other amounts due to related parties and long-term debt		452,000	2,043,000
Convertible promissory notes converted to common stock		4,666,000	0
Increase to preferred stock liquidation preference from accumulating dividends		0	531,000
Convertible promissory note deferred issuance costs in accounts payable		0	104,000
Common stock issued for share based liabilities due to related party		15,000,000	0
Common stock issued pursuant to operating lease amendment		0	11,489,000
Common stock issued for payment on convertible promissory note		0	168,000
Common stock warrants issued for long-term debt commitment fee		0	2,306,000
Common stock warrants issued for discount on long-term debt	$ 11,500,000
Common stock warrants issued for discount on long-term debt		16,036,000	3,458,000
Decrease to investment in joint venture and increase in plant and equipment for distribution or transfer of nonmonetary assets		6,867,000	51,978,000
Decrease to investment in joint venture due to bitcoin received as distribution from investee		11,682,000	0
Common stock reacquired in exchange for warrants		$ 12,479,000	$ 0