Common Stock - Schedule of Common Share Reserved for Future Issuance (Details) - shares	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Class Of Stock [Line Items]
Common stock reserved	8,720,472	7,123,787
2020 Equity Incentive Award Plan
Class Of Stock [Line Items]
Common stock reserved	3,312,646	2,690,097	2,606,546
Employee Stock Purchase Plan
Class Of Stock [Line Items]
Common stock reserved	523,747	498,747
Options Issued and Outstanding
Class Of Stock [Line Items]
Common stock reserved	4,830,410	3,881,274
Common Stock Warrants
Class Of Stock [Line Items]
Common stock reserved	53,669	53,669