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Fair Value of Financial Instruments - Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands | Aug. 02, 2020 | May 03, 2020 | Aug. 04, 2019
--- | --- | --- | ---
Premier Money Market Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | $ 7,533 | $ 7,496 | $ 6,920
Short Term Bond Funds [Member] |  |  |
Assets: |  |  |
Investments at fair value | 983 | 923 |
Growth Allocation Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | 246 | 219 | 213
Moderate Allocation Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | 71 | 63 | 130
Other [Member] |  |  |
Assets: |  |  |
Investments at fair value | 66 | 56 | 84
Quoted prices in active markets for identical assets - Level 1 [Member] | Premier Money Market Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | 7,533 | 7,496 | 6,920
Quoted prices in active markets for identical assets - Level 1 [Member] | Short Term Bond Funds [Member] |  |  |
Assets: |  |  |
Investments at fair value | 983 | 923 |
Quoted prices in active markets for identical assets - Level 1 [Member] | Growth Allocation Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | 246 | 219 | 213
Quoted prices in active markets for identical assets - Level 1 [Member] | Moderate Allocation Fund [Member] |  |  |
Assets: |  |  |
Investments at fair value | 71 | 63 | 130
Quoted prices in active markets for identical assets - Level 1 [Member] | Other [Member] |  |  |
Assets: |  |  |
Investments at fair value | $ 66 | $ 56 | $ 84

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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 http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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