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Fair Value - Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Oct. 31, 2021	May 02, 2021	Nov. 01, 2020
U.S. Government Money Market Fund [Member]
Assets:
Investments at fair value	$ 8,351
Premier Money Market Fund [Member]
Assets:
Investments at fair value		$ 7,879	$ 7,665
Bond Mutual Funds [Member]
Assets:
Investments at fair value	4,384	4,101	5,462
Inflation Protected Bond Mutual Funds [Member]
Assets:
Investments at fair value	2,975	722
Mortgage Securities Mutual Funds [Member]
Assets:
Investments at fair value	1,118	719
Large Cap Equity Mutual Funds [Member]
Assets:
Investments at fair value	694
Growth Allocation Mutual Funds [Member]
Assets:
Investments at fair value	449	339	255
Preferred Securities Mutual Fund [Member]
Assets:
Investments at fair value	282
U.S. Event Driven Equity Mutual Fund [Member]
Assets:
Investments at fair value	203
Moderate Allocation Mutual Fund [Member]
Assets:
Investments at fair value	88	86	73
Other [Member]
Assets:
Investments at fair value	201	111	67
Quoted prices in active markets for identical assets - Level 1 [Member] | U.S. Government Money Market Fund [Member]
Assets:
Investments at fair value	8,351
Quoted prices in active markets for identical assets - Level 1 [Member] | Premier Money Market Fund [Member]
Assets:
Investments at fair value		7,879	7,665
Quoted prices in active markets for identical assets - Level 1 [Member] | Bond Mutual Funds [Member]
Assets:
Investments at fair value	4,384	4,101	5,462
Quoted prices in active markets for identical assets - Level 1 [Member] | Inflation Protected Bond Mutual Funds [Member]
Assets:
Investments at fair value	2,975	722
Quoted prices in active markets for identical assets - Level 1 [Member] | Mortgage Securities Mutual Funds [Member]
Assets:
Investments at fair value	1,118	719
Quoted prices in active markets for identical assets - Level 1 [Member] | Large Cap Equity Mutual Funds [Member]
Assets:
Investments at fair value	694
Quoted prices in active markets for identical assets - Level 1 [Member] | Growth Allocation Mutual Funds [Member]
Assets:
Investments at fair value	449	339	255
Quoted prices in active markets for identical assets - Level 1 [Member] | Preferred Securities Mutual Fund [Member]
Assets:
Investments at fair value	282
Quoted prices in active markets for identical assets - Level 1 [Member] | U.S. Event Driven Equity Mutual Fund [Member]
Assets:
Investments at fair value	203
Quoted prices in active markets for identical assets - Level 1 [Member] | Moderate Allocation Mutual Fund [Member]
Assets:
Investments at fair value	88	86	73
Quoted prices in active markets for identical assets - Level 1 [Member] | Other [Member]
Assets:
Investments at fair value	$ 201	$ 111	$ 67

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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