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Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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May 01, 2021 | May 02, 2020
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | $ 150 |
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 138 | $ 159
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total | 38 | 30
Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 856 |
Deferred Tax Assets, Valuation Allowance, Total | 1,732 | $ 1,189
Deferred Tax Liabilities, Net, Total | 0 |
Foreign Tax Authority [Member] |  |
Operating Loss Carryforwards, Total | 4,457 |
Foreign Tax Authority [Member] | Deferred Tax Asset, Net Operating Loss [Member] |  |
Deferred Tax Assets, Valuation Allowance, Total | $ 595 |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Open Tax Year | 2018 2019 2020 |
State and Local Jurisdiction [Member] |  |
Open Tax Year | 2017 2018 2019 2020 |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details
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