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STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Beginning Balance at Dec. 31, 2020 $ 46,521 $ 10 $ 200,665 $ (154,154)
Beginning Balance, shares at Dec. 31, 2020   9,548,150    
Issuance of common stock for cash, net of offering costs 23,347 $ 4 23,343  
Issuance of common stock for cash, net of offering costs, shares   4,861,993    
Share-based compensation 497   497  
Net loss (19,322)     (19,322)
Ending Balance at Dec. 31, 2021 $ 51,043 $ 14 224,505 (173,476)
Ending Balance, shares at Dec. 31, 2021 14,410,143 14,410,143    
Share-based compensation $ 556   556  
Net loss (9,926)     (9,926)
Ending Balance at Dec. 31, 2022 $ 41,673 $ 14 $ 225,061 $ (183,402)
Ending Balance, shares at Dec. 31, 2022 14,410,143 14,410,143