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Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income Tax Disclosure [Line Items]      
Income tax (expense) benefit $ (64,000) $ 5,376,000 $ (639,000)
Percentage of change in ownership 50.00%    
Unrecognized tax benefits related to uncertain tax positions $ 0 $ 0  
Federal Income Tax Authority [Member]      
Income Tax Disclosure [Line Items]      
Net operating loss carryforwards $ 772,583,000    
Operating loss carryforwards, expiration year 2026    
Operating loss carryforwards indefinitely $ 541,214,000    
Federal Income Tax Authority [Member] | Research and Development [Member]      
Income Tax Disclosure [Line Items]      
Tax credit carryforwards, amount $ 1,602,000    
Tax credit carryforwards, expiration year 2027    
State and Local Jurisdiction [Member]      
Income Tax Disclosure [Line Items]      
Net operating loss carryforwards $ 34,892,000    
Operating loss carryforwards, expiration year 2022