Organization and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)		3 Months Ended	9 Months Ended
	Sep. 18, 2020	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Organization And Summary Of Significant Accounting Policies [Line Items]
Stock issuance costs			$ 37,000
Accumulated deficit			(169,427,000)		$ (120,746,000)
Cash, cash equivalents and short-term investments			61,700,000
Working capital			55,200,000
Long-lived assets, impairment losses			$ 0	$ 0
Minimum
Organization And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life			3 years
Maximum
Organization And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life			5 years
Common Stock
Organization And Summary Of Significant Accounting Policies [Line Items]
Shares issued		6,540,000		6,540,000
IPO | Common Stock
Organization And Summary Of Significant Accounting Policies [Line Items]
Shares issued	6,540,000
Shares issued, offering price per share	$ 13.00
Net proceeds from issuance	$ 76,900,000
Underwriter's discounts and commissions	6,000,000.0
Stock issuance costs	$ 2,200,000
Preferred stock automatically converted into Common Stock	16,685,014