Stockholders Equity - Schedule of Reserved Shares of Common Stock for Issuance (Details) - shares	Dec. 31, 2021	Dec. 31, 2020
Class Of Stock [Line Items]
Reserved shares of common stock for issuance	12,834,360	11,279,849
2018 Equity Incentive Plan
Class Of Stock [Line Items]
Reserved shares of common stock for issuance	0
2020 Stock Option and Grant Plan
Class Of Stock [Line Items]
Reserved shares of common stock for issuance	3,812,396
Unvested Restricted Stock
Class Of Stock [Line Items]
Reserved shares of common stock for issuance	2,866,909	3,410,979
Option To Purchase Common Stock
Class Of Stock [Line Items]
Reserved shares of common stock for issuance	6,155,055	3,972,909
Stock Available for Grant | 2020 Stock Option and Grant Plan
Class Of Stock [Line Items]
Reserved shares of common stock for issuance	3,812,396	3,895,961