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Accounts Receivable - Summary of the Activity in the Allowance for Doubtful Accounts (Detail) - Allowance for doubtful accounts [Member] - USD ($)	12 Months Ended
	Apr. 30, 2023	May 01, 2022	May 02, 2021
Valuation and Qualifying Accounts Disclosure [Line Items]
beginning balance	$ (292,000)	$ (591,000)	$ (472,000)
provision for bad debts	(121,000)	74,000	(119,000)
write-offs, net of recoveries	71,000	225,000
ending balance	$ (342,000)	$ (292,000)	$ (591,000)

X

- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses, net of adjustment.

+ References

No definition available.

+ Details

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X

- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible, net of recoveries.

+ References

No definition available.

+ Details

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- References

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X

- Definition

Amount of valuation and qualifying accounts and reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09(Column B))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09(Column E))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690

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