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Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Market offering      
Issuance costs $ 479    
Common Stock | IPO      
Issuance costs   $ 3,368  
Series C Redeemable Convertible Preferred Stock      
Issuance costs     $ 0
Series D Redeemable Convertible Preferred Stock      
Issuance costs   $ 121