Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.22.1
Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Income Taxes Disclosure [Line Items]    
Income tax provision $ 0 $ 5,000.0
Increase in valuation allowance 24,200,000  
Unrecognized benefits 0 0
Accrued interest or penalties 0 $ 0
State    
Income Taxes Disclosure [Line Items]    
Research and development credits $ 2,500,000  
Year research and development credits begin to expire 2033  
State    
Income Taxes Disclosure [Line Items]    
Net operating loss carryforwards $ 5,100,000  
Federal    
Income Taxes Disclosure [Line Items]    
Net operating loss carryforwards 536,000,000.0  
Operating loss carryforward subject to expire 316,000,000.0  
Operating loss carryforwards not subject to expire 220,000,000.0  
Net operating loss carryforwards anticipated 253,200,000  
Research and development credits $ 20,100,000  
Year research and development credits begin to expire 2022  
Research and development credits anticipated $ 9,700,000  
Federal | Minimum    
Income Taxes Disclosure [Line Items]    
Year net operating loss carryforwards begin to expire 2024  
Federal | Maximum    
Income Taxes Disclosure [Line Items]    
Year net operating loss carryforwards begin to expire 2037