Leases - Additional Information (Details)		1 Months Ended					3 Months Ended	6 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 shares	Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	May 31, 2021 USD ($)	May 13, 2019 USD ($)
Lessee Lease Description [Line Items]
Renewal options					false
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							$ 412,000	$ 412,000		$ 1,161,000		$ 0
Operating lease asset	$ 172,000		$ 44,000	$ 172,000			328,000	328,000		1,165,000	$ 1,200,000
Security deposit paid								105,000
Operating lease liability							95,000	$ 95,000		$ 420,000
Operating lease renewal		1 year
Finance lease amortized period on equipment service								18 months
Depreciation expense of finance lease right-of-use asset							12,000
Right-of-use assets obtained in exchange for new operating lease liabilities		$ 640,000
Impairment loss							0	$ 98,000	$ 0
Future rent expense								$ 345,000
Minimum
Lessee Lease Description [Line Items]
Operating lease remaining term on a straight-line basis								1 month
Maximum
Lessee Lease Description [Line Items]
Operating lease remaining term on a straight-line basis								17 months
San Diego, California
Lessee Lease Description [Line Items]
Lease agreement period	3 years			3 years
Operating lease payments	$ 337,000
Operating lease asset	326,000			$ 326,000
Operating lease liability	317,000			317,000
Rent prepayment	$ 9,000			$ 9,000
Impairment loss							98,000
San Diego, California | Other 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 asset and liability							$ 256,000	256,000
Security deposit paid								$ 17,000
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%