SIGNIFICANT ACCOUNTING POLICIES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	1 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022
Supplemental disclosure of non-cash activities:
Right-of-use asset obtained in exchange for lease obligation		$ 1,076	$ 11,223
Contribution of deposits on plant and equipment to joint venture		11,850
Deferred financing costs in accrued liabilities		345
Common stock issuance costs in accounts payable			150
Preferred stock issuance costs in other accrued liabilities or accounts payable		185	293
Purchases of and deposits on plant and equipment in accounts payable, accrued construction liabilities, other accrued liabilities and long-term debt		$ 1,647	10,100
Investment in joint venture in other accrued liabilities and long-term debt			2,043
Increase to preferred stock liquidation preference from accumulating dividends			531
Convertible promissory note deferred issuance costs in accounts payable			104
Common stock issued pursuant to operating lease amendment	$ 11,500		11,489
Common stock issued for payment on convertible promissory note			168
Common stock warrants issued for long-term debt commitment fee			2,306
Common stock warrants issued for discount on long-term debt			3,458
Decrease to investment in joint venture and increase in plant and equipment for distribution or transfer of nonmonetary assets			$ 51,978