Leases - Additional Information (Details)		1 Months Ended					3 Months Ended	6 Months Ended	9 Months Ended
	May 31, 2020 USD ($)	Mar. 31, 2022 USD ($)	Jul. 31, 2021 USD ($)	May 31, 2020 USD ($)	May 31, 2019 USD ($)	Jun. 30, 2018 USD ($) ft² Investor shares	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	May 31, 2021 USD ($)	May 13, 2019
Lessee Lease Description [Line Items]
Renewal options					false
Number of investors | Investor						1
Operating lease payments			$ 1,300,000		$ 0	$ 0
Repurchase option percentage						100.00%
Operating leases period						3 years
Operating lease payments paid for additional space					$ 63,000
Operating lease termination month and year				2021-07	2021-07
Operating lease liability	$ 172,000			$ 172,000	$ 0		$ 326,000		$ 326,000	$ 1,161,000
Operating lease asset	$ 172,000		$ 44,000	$ 172,000			208,000		208,000	1,165,000	$ 1,200,000
Security deposit paid									105,000
Operating lease liability							34,000		34,000	$ 420,000
Future rent expense									$ 218,000,000
Finance lease amortized period on equipment service									18 months
Amortization expense of the financing lease right of use asset									$ 31,000
Right-of-use assets obtained in exchange for new operating lease liabilities		$ 640,000,000
Operating lease renewal		1 year
Impairment charges							800,000		$ 800,000
Maximum
Lessee Lease Description [Line Items]
Operating lease remaining term on a straight-line basis									14 months
San Diego, California
Lessee Lease Description [Line Items]
Lease agreement period	3 years			3 years
Operating lease payments	$ 337,000
Impairment charges							$ 38,000		$ 136,000
San Diego, California | Prepaid Expenses and Other Current Assets
Lessee Lease Description [Line Items]
Security deposit paid									$ 29,000
South San Francisco, California
Lessee Lease Description [Line Items]
Operating lease payments								$ 271,000,000
Operating lease liability								256,000
Operating lease asset								256,000
Security deposit paid								$ 17,000,000
Series B Redeemable Convertible Preferred Stock
Lessee Lease Description [Line Items]
Lease agreement period						3 years
Renewal options						false
Area under lease | ft²						3,185
Shares issued | shares						114,437
Convertible preferred stock, fair value						$ 1,100,000
Series B Redeemable Convertible Preferred Stock | IPO
Lessee Lease Description [Line Items]
Conversion of redeemable convertible preferred stock to common stock ratio												100.00%