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Income Taxes - Summary of Income Taxes Paid (Refunded) (Detail) - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
		Nov. 01, 2020	Apr. 30, 2023	May 01, 2022	May 02, 2021
Income Taxes [Line Items]
United States federal - Alternative Minimum Tax (AMT) credit refunds		$ 1,500
Total income tax payments, net			$ 2,324	$ 3,100	$ 2,998
Domestic Tax Authority | United States [Member]
Income Taxes [Line Items]
United States federal - Alternative Minimum Tax (AMT) credit refunds	[1]				(1,510)
United States Transition Tax Payment			265	266	226
Foreign Tax Authority | China [Member]
Income Taxes [Line Items]
Total income tax payments, net			1,831	2,036	2,076
China - Withholding Taxes Associated with Earnings and Profits Distribution to U.S. Parent				487	798
Foreign Tax Authority | Canada [Member]
Income Taxes [Line Items]
Total income tax payments, net			$ 228	$ 311	$ 1,408
[1] In accordance with the provisions of the TCJA, we elected to treat our prior AMT credit carryforward balance of $1.5 million as refundable. We received refunds totaling $1.5 million in two separate installments totaling $746,000 and $764,000 during the first and second quarters of fiscal 2021, respectively.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of tax liability from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act.

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-Publisher FASB
-Name Accounting Standards Codification
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