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Fair Value - Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Jan. 28, 2024	Apr. 30, 2023	Jan. 29, 2023
U.S. Government Money Market Fund [Member]
Assets:
Investments at fair value	$ 6,995	$ 7,649	$ 9,364
Growth Allocation Mutual Funds [Member]
Assets:
Investments at fair value	656	528	508
Moderate Allocation Mutual Fund [Member]
Assets:
Investments at fair value	48	86	85
Other [Member]
Assets:
Investments at fair value	321	208	188
Quoted prices in active markets for identical assets - Level 1 [Member] | U.S. Government Money Market Fund [Member]
Assets:
Investments at fair value	6,995	7,649	9,364
Quoted prices in active markets for identical assets - Level 1 [Member] | Growth Allocation Mutual Funds [Member]
Assets:
Investments at fair value	656	528	508
Quoted prices in active markets for identical assets - Level 1 [Member] | Moderate Allocation Mutual Fund [Member]
Assets:
Investments at fair value	48	86	85
Quoted prices in active markets for identical assets - Level 1 [Member] | Other [Member]
Assets:
Investments at fair value	$ 321	$ 208	$ 188

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- References

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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