Income Taxes - Summary of Deferred Tax Assets Associated with Loss Carryforwards (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Apr. 24, 2021
Income Tax Disclosure [Abstract]
Federal net operating losses	$ 908	$ 1,286
Various U.S. state net operating losses (excluding federal tax effect)	2,297
Foreign capital losses	147
Foreign net operating losses	$ 92

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

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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