Business Combination - Summary of Unaudited Proforma Results (Details) - EOS Imaging S.A. - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Business Acquisition [Line Items]
Total revenue	$ 64,077	$ 36,314	$ 115,064	$ 70,525
Net loss	$ (40,016)	$ (20,711)	$ (61,215)	$ (58,726)
Net loss per share, basic and diluted	$ (0.41)	$ (0.33)	$ (0.66)	$ (0.93)