Condensed Consolidated Statements of Redeemable Convertible Preferred Stock - Series X redeemable convertible preferred stock - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Series X redeemable convertible preferred stock
Balance, beginning of period	$ 240,881	$ 0
Balance, beginning of period (in shares)	86,077	0
Issuance of preferred stock in a private offering of public equity, net of issuance costs		$ 84,696
Issuance of preferred stock in a private offering of public equity, net of issuance costs (in shares)		35,573
Issuance of preferred stock upon acquisition of Quellis		$ 156,185
Issuance of preferred stock upon acquisition of Quellis (in shares)		50,504
Reclassification of preferred stock to permanent equity	$ (240,881)	$ (240,881)
Reclassification of preferred stock to permanent equity (in shares)	(86,077)	(86,077)
Balance, end of period	$ 0	$ 0
Balance, end of period (in shares)	0	0