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Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Net revenue    
Total net revenue $ 5,033 $ 3,403
Cost of net revenue 3,106 1,948
Gross profit 1,927 1,455
Operating expenses    
Research and development 3,887 5,486
Selling, general and administrative 2,242 2,705
Gain on license and asset sale (406)
Total operating expenses 5,723 8,191
Loss from operations (3,796) (6,736)
Change in fair value of warrant liability 658
Other expense, net (10) (18)
Net loss (3,148) (6,754)
Other comprehensive loss, net of tax:    
Net unrealized gain (loss) on available-for-sale securities 14 (37)
Comprehensive loss $ (3,134) $ (6,791)
Net loss per share    
Basic and diluted (in Dollars per share) $ (0.15) $ (0.34)
Shares used in computing net loss per share    
Basic and diluted (in Shares) 21,561 19,769
Product    
Net revenue    
Total net revenue $ 4,888 $ 3,204
Royalty and Other    
Net revenue    
Total net revenue $ 145 $ 199