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Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Operating activities:    
Net loss $ (24,529) $ (24,231)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Share-based compensation 2,308 2,969
Depreciation 2,357 1,798
Debt related fees and amortization expense 2,675 1,421
Intangibles and other amortization expense 12 12
Accretion and other expenses of Series A preferred units 2,279 3,311
Changes in operating assets and liabilities:    
Accounts receivable 751 (245)
Inventories 2,505 2,259
Prepaid expenses (57) 929
Tax credit sale receivable 12,300 0
Other assets 516 (544)
Accounts payable (650) (3,236)
Accrued interest expense and fees (206) 5,500
Other liabilities (101) (221)
Net cash provided by (used in) operating activities 160 (10,278)
Investing activities:    
Capital expenditures (1,825) (3,583)
Grant proceeds and other reimbursements received for capital expenditures 0 1,900
Net cash used in investing activities (1,825) (1,683)
Financing activities:    
Proceeds from borrowings 3,800 6,223
Repayments of borrowings (5,181) (411)
Payments on Series A preferred financing (2,200) 0
Lender debt renewal and waiver fee payments (295) (750)
Payments on finance leases (9) (8)
Proceeds from sales of common stock 5,087 5,513
Proceeds from exercise of stock options 50 36
Net cash provided by financing activities 1,252 10,603
Effect of exchange rate changes on cash, cash equivalents, and restricted cash 6 15
Net change in cash, cash equivalents, and restricted cash for period (407) (1,343)
Cash, cash equivalents, and restricted cash at beginning of period 3,831 6,280
Cash, cash equivalents and restricted cash at end of period 3,424 4,937
Supplemental disclosures of cash flow information, cash paid:    
Cash paid for interest 10,302 2,963
Income taxes paid 0 878
Supplemental disclosures of cash flow information, non-cash transactions:    
Subordinated debt extension fees added to debt 340 340
Fair value of warrants issued to subordinated debt holders 304 593
Lender debt extension, waiver, and other fees added to debt 2,126 595
Cumulative capital expenditures in accounts payable $ 10,671 $ 8,927