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Condensed Consolidated Statements of Convertible Preferred Shares and Shareholders' Equity (Deficit) (Parenthetical) (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2020
Mar. 31, 2019
Initial Public Offering    
Stock issuance costs $ 20,957  
Series A Convertible Preferred Shares    
Stock issuance costs   $ 5