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Consolidated Statements of Stockholders' Equity (Deficit) (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Series B Redeemable Convertible Preferred Stock    
Issuance costs   $ 4.5
IPO    
Issuance costs   $ 18.6
Follow-on Common Stock Offering    
Issuance costs $ 11.3