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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Operating Loss Carryforwards [Line Items] |  |  |  |
Effective income tax rate | (8.30%) | 53.50% | (0.50%) | 10.80%
Net operating losses carried back term due to cares act |  |  | 5 years |
Favorably impacted by an income tax benefit |  | $ 90.3 |  | $ 90.3
Income tax receivable recorded in other assets | $ 90.3 |  | $ 90.3 |

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