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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Operating activities:    
Net loss $ (107,758) $ (47,147)
Adjustments to reconcile net loss to net cash used by operating activities:    
Share-based compensation 6,410 3,928
Depreciation 5,535 5,448
Debt related fees and amortization expense 7,363 3,921
Intangibles and other amortization expense 46 46
Accretion and other expenses of Series A preferred units 9,888 7,718
Loss on asset disposals 47 0
Loss (gain) on debt extinguishment 49,386 (1,134)
Gain on litigation (1,400) 0
Loss on lease termination 736
Provision for excess and obsolete inventory 0 1,040
Provision for bad debts 0 144
Deferred Tax liability 832 0
Changes in operating assets and liabilities:    
Accounts receivable 294 94
Inventories 360 (2,211)
Prepaid expenses 1,777 (4,849)
Other assets (3,941) 2,368
Accounts payable 2,183 (5,198)
Accrued interest expense and fees 15,501 14,456
Other liabilities (10,125) 729
Net cash used in operating activities (22,866) (20,647)
Investing activities:    
Capital expenditures (39,157) (26,652)
Grant proceeds and other reimbursement received for capital expenditures 7,851 3,758
Net cash used in investing activities (31,306) (22,894)
Financing activities:    
Proceeds from borrowings 69,356 0
Repayments of borrowings (26,266) (55,523)
TEC debt renewal and waiver fee payments (1,169) (1,108)
Grant proceeds received for capital expenditures 0 115
Payments on finance leases (481) (505)
Proceeds from issuance of common stock in equity offering 11,987 103,591
Proceeds from the exercise of stock options 206 1,304
Proceeds from Series A preferred units financing 0 3,130
Series A preferred financing redemption 0 (300)
Net cash provided by financing activities 53,633 50,704
Effect of exchange rate changes on cash and cash equivalents (213) (4)
Net change in cash and cash equivalents for period (752) 7,159
Cash, cash equivalents, and restricted cash at beginning of period 7,751 592
Cash, cash equivalents, and restricted cash at end of period 6,999 7,751
Supplemental disclosures of cash flow information, cash paid:    
Cash paid for interest 19,515 5,682
Income taxes paid 10 7
Supplemental disclosures of cash flow information, non-cash transactions:    
Subordinated debt extension fees added to debt 680 680
Debt fees added to revolving lines 800 0
Fair value of warrants issued to subordinated debt holders 1,939 1,546
Fair value of stock issued to a related party for guarantee fees 2,012 0
Fair value of warrants issued to lender for debt issuance costs 3,158 0
Fair value of stock issued to lender 1,335 0
Fair value of warrants issued for capital expenditures 0 1,344
TEC debt extension, waiver fees, promissory notes fees added to debt 583 608
Capital expenditures in accounts payable 15,411 7,693
Payment of debt added to revolving lines 16,266 0
Operating lease liabilities arising from obtaining right of use assets 306 0
Financing lease liabilities arising from obtaining right of use assets 2,932 113
Capital expenditures purchased on financing 290 55
Issuance of equity to pay off accounts payable $ 0 $ 893