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Income Taxes - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2024
USD ($)
Income Tax [Line Items]  
Net change in valuation allowance $ 1,000,000
Unrecognized tax benefits, tax penalties and interest accrued 0
Federal  
Income Tax [Line Items]  
Net operating loss carryforwards 280,200,000
NOL carryforwards began to expire $ 225,800,000
Net operating loss carryforwards, expiration year 2025
NOL carryforwards to be carried forward indefinitely $ 54,400,000
Research tax credit carry forwards $ 8,300,000
Research and development credits, expiration period 2025
California  
Income Tax [Line Items]  
Net operating loss carryforwards $ 193,900,000
Net operating loss carryforwards, expiration year 2028
Research tax credit carry forwards $ 2,400,000