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SIGNIFICANT ACCOUNTING POLICIES - Supplemental Cash Flow Information (Details) - USD ($)
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Supplemental disclosure of non-cash activities:    
Contribution of plant and equipment or deposits on plant and equipment to joint venture $ 0 $ 35,792,000
Common stock issuance costs in accounts payable 0 250,000
Purchases of and deposits on plant and equipment in accounts payable, accrued construction liabilities, other accrued liabilities and long-term debt 4,385,000 2,621,000
Purchases of and deposits on plant and equipment with digital currency 316,000 0
Investment in joint venture in other accrued liabilities, other amounts due to related parties and long-term debt 0 721,000
Convertible promissory notes converted to common stock 0 4,666,000
Common stock issued for share based liabilities due to related party 2,500,000 0
Common stock warrants issued for discount on long-term debt 0 16,036,000
Decrease to investment in joint venture and increase in plant and equipment for distribution or transfer of nonmonetary assets 0 4,519,000
Decrease to investment in joint venture due to bitcoin received as distribution from investee 12,022,000 0
Common stock reacquired in exchange for warrants $ 0 $ 12,479,000