Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity - Mezzanine Equity $ in Thousands	Series X redeemable convertible preferred stock USD ($) shares
Mezzanine equity, beginning balance at Dec. 31, 2020 | $	$ 0
Mezzanine equity, beginning balance (in shares) at Dec. 31, 2020 | shares	0
Series X redeemable convertible preferred stock
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) | shares	35,573
Issuance of preferred stock and common stock upon acquisition of Quellis | $	$ 156,185
Issuance of preferred stock and common stock upon acquisition of Quellis (in shares) | shares	50,504
Mezzanine equity, ending balance at Mar. 31, 2021 | $	$ 240,881
Mezzanine equity, ending balance (in shares) at Mar. 31, 2021 | shares	86,077
Series X redeemable convertible preferred stock
Reclassification of preferred stock to permanent equity | $	$ (240,881)
Mezzanine equity, ending balance at Jun. 30, 2021 | $	$ 0
Mezzanine equity, ending balance (in shares) at Jun. 30, 2021 | shares	0
Series X redeemable convertible preferred stock
Reclassification of preferred stock to permanent equity (in shares) | shares	(86,077)