Net Loss Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net loss	$ (71,742)	$ (60,334)	$ (19,612)
Net loss attributable to ordinary shareholders - basic and diluted	$ (71,742)	$ (60,334)	$ (19,612)
Weighted average ordinary shares outstanding - basic (in shares)	39,997,587	16,991,664	7,476,422
Weighted average ordinary shares outstanding - diluted (in shares)	39,997,587	16,991,664	7,476,422
Net loss per share - basic (in dollars per share)	$ (1.79)	$ (3.55)	$ (2.62)
Net loss per share - diluted (in dollars per share)	$ (1.79)	$ (3.55)	$ (2.62)