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Consolidated Statements of Convertible Preferred Shares and Shareholders' Equity (Deficit) (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Series A Convertible Preferred Shares      
Stock issuance costs     $ 5
Series B Convertible Preferred Shares      
Stock issuance costs     $ 248
Initial Public Offering      
Stock issuance costs   $ 20,957  
Follow On Offering      
Stock issuance costs $ 840