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Income Taxes - Summary of Change in Valuation Allowances Against U.S. Net Deferred Income Tax Assets (Detail) - USD ($) $ in Thousands		12 Months Ended
		Apr. 27, 2025	Apr. 28, 2024	Apr. 30, 2023
Income Tax Disclosure [Abstract]
beginning balance		$ 22,004	$ 18,675	$ 11,857
change in valuation allowance associated with current year earnings		4,162	3,318	7,252
change in estimate during current year	[1]	137	11	(434)
ending balance		$ 26,303	$ 22,004	$ 18,675
[1] Amounts represent changes in our U.S. net deferred income tax asset balances during the current year that pertain to: (i) income tax provision to return adjustments; (ii) changes in estimates of our U.S. effective income tax rate that pertain to U.S. state income tax rates and apportionment percentages, (iii) expiration of certain U.S. state loss carryforwards; and (iv) other immaterial items.

X

- Definition

Valuation allowance change associated with current year earnings.

+ References

No definition available.

+ Details

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X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

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- References

No definition available.

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X

- Definition

Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-4

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