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Condensed Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Loss
Accumulated Deficit
Stockholders' Equity, beginning balances at Dec. 31, 2020 $ 256,387 $ 3 $ 392,063 $ (135,679)
Stockholders' Equity, beginning balances (in shares) at Dec. 31, 2020   26,681,983      
Issuance of common stock upon exercise of stock options 99   99    
Issuance of common stock upon exercise of stock options (in shares)   12,396      
Stock-based compensation expense 2,329   2,329    
Vesting of common stock warrants issued for services 22   22    
Net loss (16,406)       (16,406)
Stockholders' Equity, ending balances at Mar. 31, 2021 242,431 $ 3 394,513 (152,085)
Stockholders' Equity, ending balances (in shares) at Mar. 31, 2021   26,694,379      
Stockholders' Equity, beginning balances at Dec. 31, 2021 319,107 $ 3 526,523 (423) (206,996)
Stockholders' Equity, beginning balances (in shares) at Dec. 31, 2021   32,224,524      
Issuance of common stock upon exercise of stock options $ 330   330    
Issuance of common stock upon exercise of stock options (in shares) 39,541 39,541      
Stock-based compensation expense $ 3,933   3,933    
Vesting of common stock warrants issued for services 22   22    
Net unrealized loss on marketable securities (998)     (998)  
Net loss (26,338)       (26,338)
Stockholders' Equity, ending balances at Mar. 31, 2022 $ 296,056 $ 3 $ 530,808 $ (1,421) $ (233,334)
Stockholders' Equity, ending balances (in shares) at Mar. 31, 2022   32,264,065