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Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Income Taxes [Line Items]    
Provision for income tax $ 0 $ 0
Net deferred tax asset 0 0
Federal [Member]    
Income Taxes [Line Items]    
Net operating loss carryforwards subject to expiration $ 199,400,000 212,400,000
Net operating loss carryforwards expiration year 2025  
Net operating loss carryforwards expiration year 2035  
Net operating loss carryforwards, indefinitely $ 44,000,000  
Foreign [Member]    
Income Taxes [Line Items]    
Net operating loss carryforwards subject to expiration 26,700,000 $ 26,700,000
2025 Through 2027 [Member]    
Income Taxes [Line Items]    
Net operating loss carryforwards subject to expiration 27,000,000  
2028 Through 2037 [Member]    
Income Taxes [Line Items]    
Net operating loss carryforwards subject to expiration $ 128,000,000