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Revenue from Contracts with Customers - Narrative (Detail)	12 Months Ended
	Apr. 30, 2023 USD ($) Segment	May 01, 2022 USD ($)	May 02, 2021 USD ($)	May 03, 2020 USD ($)
Contract Assets and Liabilities [Line Items]
Number of operating segments | Segment	2
Contract assets recognized	$ 0	$ 0
Deferred Revenue	1,192,000	520,000	$ 540,000	$ 502,000
Upfront customer deposits	$ 942,000	$ 520,000
Minimum [Member]
Contract Assets and Liabilities [Line Items]
Contract with customers credit period	15 days
Maximum [Member]
Contract Assets and Liabilities [Line Items]
Contract with customers credit period	60 days
Upholstery Fabrics [Member]
Contract Assets and Liabilities [Line Items]
Upfront license fee payment	$ 250,000

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Upfront customer deposits

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Upfront license fee

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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