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Income Taxes - Unrecognized Tax Benefit (Detail) - USD ($)	12 Months Ended
	Apr. 27, 2025	Apr. 28, 2024	Apr. 30, 2023
Income Tax Disclosure [Abstract]
beginning balance	$ 1,258,000	$ 1,179,000	$ 1,101,000
increases from prior period tax positions	224,000	197,000	175,000
decreases from prior period tax positions	(76,000)	(118,000)	(97,000)
lapse of applicable statute of limitations	(616,000)	0	0
ending balance	$ 790,000	$ 1,258,000	$ 1,179,000

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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