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Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Operating activities:    
Net loss $ (26,410) $ (18,294)
Adjustments to reconcile net loss to net cash used in operating activities:    
Share-based compensation 2,662 2,040
Depreciation 1,790 1,336
Debt related fees and amortization expense 1,969 1,826
Intangibles and other amortization expense 12 12
Accretion and other expenses of Series A preferred units 5,564 1,640
Deferred tax benefit (262) 0
Changes in operating assets and liabilities:    
Accounts receivable 1,005 911
Inventories (7,942) 256
Prepaid expenses 2,315 2,457
Other assets 460 251
Accounts payable 3,002 833
Accrued interest expense and fees 5,356 4,691
Other liabilities (779) (6,111)
Net cash used in operating activities (11,258) (8,152)
Investing activities:    
Capital expenditures (7,616) (9,459)
Grant proceeds and other reimbursements received for capital expenditures 6,757 1,467
Net cash used in investing activities (859) (7,992)
Financing activities:    
Proceeds from borrowings 11,583 18,482
Repayments of borrowings (2,724) (4,000)
Lender debt renewal and waiver fee payments 0 (669)
Payments on finance leases (83) (132)
Proceeds from issuance of common stock in equity offering 2,617 0
Proceeds from the exercise of stock options 0 197
Net cash provided by financing activities 11,393 13,878
Effect of exchange rate changes on cash and cash equivalents (56) (14)
Net change in cash and cash equivalents for period (780) (2,280)
Cash and cash equivalents at beginning of period 6,999 7,751
Cash and cash equivalents at end of period 6,219 5,471
Supplemental disclosures of cash flow information, cash paid:    
Cash paid for interest 1,515 4,026
Income taxes paid 14 7
Supplemental disclosures of cash flow information, non-cash transactions:    
Subordinated debt extension fees added to debt 340 340
Debt fees added to revolving lines 423 500
Fair value of warrants issued to subordinated debt holders 448 1,393
Fair value of stock issued to a related party for guarantee fees 0 2,012
Fair value of warrants issued to lender for debt issuance costs 0 3,158
Fair value of stock issued to lender 0 1,335
Lender debt extension, waiver, and other fees added to debt 384 583
Cumulative capital expenditures in accounts payable, including net (decrease) increase of ($511) and $1,535, respectively 14,900 9,228
Payment of debt added to revolving lines $ 0 $ 16,266