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Income Taxes - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Provision (benefit) for income taxes for continuing operations | $ 8,880,000 | $ 4,466,000 | $ 16,386,000 | $ 5,506,000 |
Effective income tax rate | 28.60% | 32.70% | 29.70% | 32.30% |
Valuation allowance | $ 4,400,000 |  | $ 4,400,000 |  | $ 4,400,000
Net deferred tax asset | 40,400,000 |  | 40,400,000 |  | 41,400,000
Net current tax asset | 811,000 |  | $ 811,000 |  | $ 1,000,000.0
Change in uncertain tax positions | $ 0 |  |  |  |
CARES Act |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |
Net operating loss carryback period |  |  | 5 years |  |

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