Preferred and Common Stock - Schedule of Common Stock Reserved for Future Issuances (Details)	Sep. 30, 2020 shares
Class Of Stock [Line Items]
Shares of common stock reserved for future issuances	3,046,213
Stock Options
Class Of Stock [Line Items]
Shares of common stock reserved for future issuances	2,896,213
Employee stock purchase plan
Class Of Stock [Line Items]
Shares of common stock reserved for future issuances	150,000