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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Income Tax Disclosure [Line Items]        
Effective tax rate expense (benefit) 1.40% (18.00%) (3.90%) (19.20%)
Deferred tax assets $ 91.3   $ 91.3  
Valuation allowance established against deferred tax assets $ 87.1   $ 87.1