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CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Operating activities:    
Net loss $ (18,112) $ (12,052)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Share-based compensation 835 310
Depreciation 1,386 1,090
Debt related fees and amortization expense 1,215 1,290
Intangibles and other amortization expense 12 12
Accretion of Series A preferred units 1,943 960
Deferred tax benefit 0 (215)
Provision for bad debts 144 0
Changes in operating assets and liabilities:    
Accounts receivable (78) 384
Inventories (242) 1,075
Prepaid expenses (1,391) (117)
Other assets 1,363 428
Accounts payable (1,795) 1,074
Accrued interest expense and fees 571 5,440
Other liabilities 76 931
Net cash provided by (used in) operating activities (14,073) 610
Investing activities:    
Capital expenditures (6,560) (2,372)
Grant proceeds received for capital expenditures 1,191 0
Net cash used in investing activities (5,369) (2,372)
Financing activities:    
Proceeds from borrowings 0 3,780
Repayments of borrowings (31,631) (3,645)
Grant proceeds received for capital expenditures 115 0
Payments on finance leases (124) 0
Proceeds from issuance of common stock in equity offering 62,438 0
Proceeds from the exercise of stock options 1,003 0
Proceeds from Series A preferred units financing 3,130 1,285
Series A preferred financing redemption (300) 0
Net cash provided by financing activities 34,631 1,420
Effect of exchange rate changes on cash and cash equivalents 6 (11)
Net cash and cash equivalents for period 15,195 (353)
Cash and cash equivalents at beginning of period 592 656
Cash and cash equivalents at end of period 15,787 303
Supplemental disclosures of cash flow information, cash paid:    
Cash paid for interest 5,296 182
Income taxes paid 7 8
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 281 93
TEC debt extension, waiver fees, promissory notes fees added to debt 1,215 29
Capital expenditures in accounts payable 4,556 2,289
Capital expenditures purchased on financing $ 0 $ 5,652