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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 |

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