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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

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