Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.24.1
Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Income Taxes Disclosure [Line Items]    
Income tax provision $ (11,000) $ 53,000
Change in valuation allowance (2,300,000)  
Unrecognized benefits 0 0
Accrued interest or penalties 0 $ 0
State | Research Tax Credit Carryforward [Member]    
Income Taxes Disclosure [Line Items]    
Research and development credits $ 2,900,000  
Minimum | State | Research Tax Credit Carryforward [Member]    
Income Taxes Disclosure [Line Items]    
Expiration date of carryforward losses Jan. 01, 2033  
State    
Income Taxes Disclosure [Line Items]    
Net operating loss carryforwards $ 35,300,000  
Federal    
Income Taxes Disclosure [Line Items]    
Net operating loss carryforwards 524,800,000  
Operating loss carryforward subject to expire 286,900,000  
Operating loss carryforwards not subject to expire 237,900,000  
Unutilized operating losses 253,200,000  
Federal | Research Tax Credit Carryforward [Member]    
Income Taxes Disclosure [Line Items]    
Unutilized operating losses 9,500,000  
Research and development credits $ 23,900,000  
Federal | Minimum    
Income Taxes Disclosure [Line Items]    
Expiration date of carryforward losses Jan. 01, 2025  
Federal | Minimum | Research Tax Credit Carryforward [Member]    
Income Taxes Disclosure [Line Items]    
Expiration date of carryforward losses Jan. 01, 2024  
Federal | Maximum    
Income Taxes Disclosure [Line Items]    
Expiration date of carryforward losses Jan. 01, 2037