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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (UNAUDITED) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Statement of Comprehensive Income [Abstract]    
Revenue $ 830 $ 1,199
Operating expenses:    
Cost of goods sold (exclusive of depreciation and amortization) 3,023 3,037
Research and development 4,578 3,988
Selling, general and administrative 6,054 9,340
Depreciation and amortization 1,125 882
Total operating expenses 14,780 17,247
Operating loss (13,950) (16,048)
Other income (expense):    
Interest income 469
Change in fair value of warrants (2,800) 6,387
Other loss, net (81) (16)
Loss before income taxes (16,362) (9,677)
Benefit (Provision) for income taxes 13 (34)
Net loss (16,349) (9,711)
Foreign currency translation adjustment 432 (13)
Comprehensive loss (15,917) (9,724)
Net loss attributable to common stockholders $ (16,349) $ (9,711)
Weighted average of shares outstanding – basic 106,405 100,868
Weighted average of shares outstanding – diluted 106,405 100,868
Net loss attributable to common stockholders per share - basic $ (0.15) $ (0.1)
Net loss attributable to common stockholders per share - diluted $ (0.15) $ (0.1)