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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Components Of Income Tax Expense Benefit [Line Items]    
Income tax effective rate 3.40% (355.60%)
Internal Revenue Service [Member]    
Components Of Income Tax Expense Benefit [Line Items]    
Income tax benefit $ 0.3  
Minimum [Member]    
Components Of Income Tax Expense Benefit [Line Items]    
Decrease in unrecognized tax benefits 1.0  
Maximum [Member]    
Components Of Income Tax Expense Benefit [Line Items]    
Decrease in unrecognized tax benefits $ 1.5