Income Taxes - Additional Information (Detail) - USD ($)		12 Months Ended
	Jun. 29, 2020	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Accrual on interest and penalties related to income taxes		$ 0
Uncertain tax position		2,000,000.0	$ 2,000,000.0
Removal of net operating losses from deferred tax assets		$ 24,500,000
Cumulative change in ownership for limitation of use of net operating loss and research and development credit carryforwards		50.00%
Period of cumulative change of ownership		3 years
Removal of research and development credit from deferred tax assets		$ 3,600,000
Deferred tax asset, Valuation allowance increase		$ 20,000	444,000
Percentage of taxable income offset by tax losses		80.00%
Changes to unrecognized tax benefits		$ 0	$ 0
Unrecognized tax benefits that would affect company's effective tax rate, if recognized		$ 0
Earliest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Tax years subject to examination by taxing authorities		2007
California [Member]
Operating Loss Carryforwards [Line Items]
Uncertain tax position		$ 2,000,000.0
Net operating loss carry forwards		$ 52,100,000
Expiry date of carry forwards		Dec. 31, 2028
California [Member] | Research Tax Credit Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carry forwards		$ 1,500,000
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards		$ 100,000,000.0
Expiry date of carry forwards		Dec. 31, 2027
Net operating loss carryforwards, not subject to expiration		$ 38,200,000
Federal [Member] | Research Tax Credit Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carry forwards		$ 2,400,000
CALIFORNIA [Member]
Operating Loss Carryforwards [Line Items]
Maximum amount of tax offset per year	$ 5,000,000
Required minimum taxable income	$ 1,000,000