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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Mar. 27, 2020 | Mar. 26, 2020 | Mar. 31, 2020 | Sep. 30, 2020
Income Tax Disclosure [Abstract] |  |  |  |
Business interest income, adjusted taxable income |  | 30.00% |  |
CARES act of 2020, Business interest income, adjusted taxable income | 50.00% |  |  |
Cash tax benefit due to reversal of valuation allowance |  |  | $ 0.5 |
Estimated reduction in unrecognized tax benefits due to expiration of certain statutes of limitations |  |  |  | $ 0.7

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- Definition Coronavirus aid relief and economic security act effective income tax rate reconciliation deduction of interest income. + References No definition available. + Details
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- Definition Tax cuts and jobs act of 2017 effective income tax rate reconciliation, deduction of interest income. + References No definition available. + Details
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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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