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Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
OPERATING EXPENSES:    
Research and development $ 3,894 $ 4,591
Sales, general and administrative 3,309 2,347
Total operating expenses 7,203 6,938
Loss from operations (7,203) (6,938)
Other income (expense), net:    
Interest and other income, net 107 6
Other income (expense), net 107 6
Net loss (7,096) (6,932)
Net loss (7,096) (6,932)
Other comprehensive loss:    
Change in unrealized loss on available-for-sale securities (19)
Total comprehensive loss $ (7,096) $ (6,951)
Net loss per share, basic (in Dollars per share) $ (0.19) $ (0.21)
Weighted average shares used in computing net loss per share, basic (in Shares) 37,541,070 32,744,004