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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Jun. 30, 2022 | Dec. 31, 2021
Valuation Allowance [Line Items] |  |  |  |  |  |
Deferred tax assets valuation allowance | $ 30.1 |  | $ 30.1 |  | $ 32.2 | $ 32.2
Effective tax rate impact associated with State NOL | 4.60% |  | 1.30% |  |  |
Increase in valuation allowance against State NOL | $ 1.4 |  | $ 1.4 |  |  |
Valuation allowance related to capital loss | $ 3.1 |  | $ 3.1 |  |  |
Decrease in effective tax rate due to federal and state tax credits | (0.30%) | (0.60%) | (0.10%) | (0.20%) |  |
Net benefit effective tax rate impact associated with stock-based compensation and prior tax reserves |  |  | 0.20% | 0.50% |  |
Decrease in unrecognized tax positions | $ 6.1 |  | $ 6.1 |  |  |
Interest and penalties | 2.2 |  | 2.2 |  |  |
State [Member] |  |  |  |  |  |
Valuation Allowance [Line Items] |  |  |  |  |  |
Deferred tax assets valuation allowance | $ 30.1 |  | 30.1 |  | $ 32.2 |
Increase in valuation allowance against State NOL |  |  | $ 1.0 |  |  |

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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI https://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 + Details
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