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Unaudited Condensed Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2022   16,549,984    
Beginning balance at Dec. 31, 2022 $ 42,460 $ 17 $ 297,970 $ (255,527)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Issuance of stock from vested restricted stock units (in shares)   113,378    
Issuance of stock under Employee Stock Purchase Plan (in shares)   70,317    
Issuance of stock under Employee Stock Purchase Plan 152   152  
Exercise of stock options (in shares)   93,335    
Exercise of stock options 27   27  
Stock-based compensation 986   986  
Net loss (7,688)     (7,688)
Ending balance (in shares) at Mar. 31, 2023   16,827,014    
Ending balance at Mar. 31, 2023 $ 35,937 $ 17 299,135 (263,215)
Beginning balance (in shares) at Dec. 31, 2023 17,045,954 17,045,954    
Beginning balance at Dec. 31, 2023 $ 22,694 $ 17 301,893 (279,216)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Issuance of stock from vested restricted stock units (in shares)   217,056    
Issuance of stock under Employee Stock Purchase Plan (in shares)   54,605    
Issuance of stock under Employee Stock Purchase Plan 104   104  
Exercise of stock options (in shares)   326    
Stock-based compensation 553   553  
Net loss $ (3,360)     (3,360)
Ending balance (in shares) at Mar. 31, 2024 17,317,941 17,317,941    
Ending balance at Mar. 31, 2024 $ 19,991 $ 17 $ 302,550 $ (282,576)