Income Taxes (Details Textual) - USD ($)	12 Months Ended
Apr. 30, 2022	May 01, 2021
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would impact effective tax rate	$ 166,000
Unrecognized tax benefits, reduction resulting from lapse of applicable statute of limitations	150,000	$ 138,000
Accrued interest and penalties	38,000	38,000
Deferred tax assets, operating loss carryforwards, foreign	723,000
Deferred tax assets, valuation allowance	2,452,000	$ 1,732,000
Deferred tax liabilities	0
Foreign Tax Authority
Income Tax Contingency [Line Items]
Operating loss carryforwards	3,460,000
Deferred Tax Asset, Net Operating Loss \| Foreign Tax Authority
Income Tax Contingency [Line Items]
Deferred tax assets, valuation allowance	$ 581,000

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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