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Income Taxes - 2017 Tax Cuts and Jobs Act - Narrative (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 02, 2020 | May 02, 2021 | May 03, 2020 | Apr. 28, 2019
Income Taxes [Line Items] |  |  |  |
Federal statutory income tax rate |  | 21.00% | 21.00% | 21.00%
Provisional income tax (benefit) expense of U.S. net deferred income taxes |  |  |  | $ (268,000)
Provisional income tax (benefit) expense Transition Tax |  |  |  | (282,000)
GILTI [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax charge of during period |  |  | $ 1,900,000 | $ 2,100,000
Non-cash income tax benefit | $ 3,600,000 | $ 3,600,000 |  |

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of income tax expense (benefit) for remeasurement of deferred tax from change in tax rate pursuant to Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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