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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Loss
Accumulated Deficit
Balance at the beginning at Dec. 31, 2021 $ 109,700 $ 4 $ 252,464 $ (119) $ (142,649)
Balance at the beginning (in shares) at Dec. 31, 2021   35,034      
Issuance of common stock under Equity Purchase Agreement, shares   100      
Issuance of common stock under Equity Purchase Agreement 273   273    
Repurchase of early exercised stock options 0        
Repurchase of early exercised stock options, shares   (8)      
Vesting of early exercised stock options 30   30    
Stock-based compensation expense 916   916    
Other comprehensive loss (310)     (310)  
Net loss (7,947)       (7,947)
Balance at the end at Mar. 31, 2022 102,662 $ 4 253,683 (429) (150,596)
Balance at the end (in shares) at Mar. 31, 2022   35,126      
Balance at the beginning at Dec. 31, 2022 76,001 $ 3 254,892 (241) (178,653)
Balance at the beginning (in shares) at Dec. 31, 2022   30,088      
Repurchase of early exercised stock options 39        
Repurchase of early exercised stock options, shares   (9)      
Vesting of early exercised stock options 13   13    
Stock-based compensation expense 1,129   1,129    
Other comprehensive loss 191     191  
Net loss (14,297)       (14,297)
Balance at the end at Mar. 31, 2023 $ 63,037 $ 3 $ 256,034 $ (50) $ (192,950)
Balance at the end (in shares) at Mar. 31, 2023   30,079