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General and Summary of Significant Accounting Policies - Summary of Foreign Currency Exchange Rate Gains (Losses) by Geographic Area (Detail) - USD ($) $ in Thousands	12 Months Ended
	Apr. 27, 2025	Apr. 28, 2024	Apr. 30, 2023
Foreign Currency Exchange Rate Gain and Loss [Line Items]
Foreign currency exchange rate gains (losses)	$ 117	$ 545	$ 500
China [Member]
Foreign Currency Exchange Rate Gain and Loss [Line Items]
Foreign currency exchange rate gains (losses)	141	604	588
Canada [Member]
Foreign Currency Exchange Rate Gain and Loss [Line Items]
Foreign currency exchange rate gains (losses)	(23)	(58)	$ (88)
Vietnam [Member]
Foreign Currency Exchange Rate Gain and Loss [Line Items]
Foreign currency exchange rate gains (losses)	$ (1)	$ (1)

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- Definition

Foreign currency exchange rate gain and loss.

+ References

No definition available.

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- Definition

Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 20
-Name Accounting Standards Codification
-Section 35
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482014/830-20-35-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481956/830-20-45-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481926/830-20-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481839/830-10-45-17

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