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Fair Value - Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands | Jan. 29, 2023 | May 01, 2022 | Jan. 30, 2022
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U.S. Government Money Market Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | $ 9,364 | $ 8,683 | $ 8,531
Large Cap Equity Mutual Funds [Member] |  |  |
Assets: |  |  |
Investments at fair value |  |  | 74
Moderate Allocation Mutual Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | 85 | 81 | 86
Other [Member] |  |  |
Assets: |  |  |
Investments at fair value | 188 | 158 | 259
Growth Allocation Mutual Funds [Member] |  |  |
Assets: |  |  |
Investments at fair value | 508 | 435 | 444
Bond Mutual Funds [Member] |  |  |
Assets: |  |  |
Investments at fair value |  |  | 267
Quoted prices in active markets for identical assets - Level 1 [Member] | U.S. Government Money Market Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | 9,364 | 8,683 | 8,531
Quoted prices in active markets for identical assets - Level 1 [Member] | Large Cap Equity Mutual Funds [Member] |  |  |
Assets: |  |  |
Investments at fair value |  |  | 74
Quoted prices in active markets for identical assets - Level 1 [Member] | Moderate Allocation Mutual Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | 85 | 81 | 86
Quoted prices in active markets for identical assets - Level 1 [Member] | Other [Member] |  |  |
Assets: |  |  |
Investments at fair value | 188 | 158 | 259
Quoted prices in active markets for identical assets - Level 1 [Member] | Growth Allocation Mutual Funds [Member] |  |  |
Assets: |  |  |
Investments at fair value | $ 508 | $ 435 | 444
Quoted prices in active markets for identical assets - Level 1 [Member] | Bond Mutual Funds [Member] |  |  |
Assets: |  |  |
Investments at fair value |  |  | $ 267

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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