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Net Loss per Share - Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Loss per share    
Net loss $ (131,799) $ (86,483)
Weighted average common shares outstanding, basic (in shares) 36,711,833 30,734,109
Weighted average common shares outstanding, diluted (in shares) 36,711,833 30,734,109
Net loss per share, basic (in dollars per share) $ (3.59) $ (2.81)
Net loss per share, diluted (in dollars per share) $ (3.59) $ (2.81)