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Fair Value of Financial Instruments - Recurring Basis (Detail) - USD ($) $ in Thousands | May 01, 2016 | May 03, 2015
--- | --- | ---
Premier Money Market Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | $ 3,404 | $ 2,285
Low Duration Bond Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 1,604 | 2,096
Intermediate Term Bond Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 1,154 | 2,181
Strategic Income Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 999 | 1,008
Limited Term Bond Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 602 | 3,107
Large Blend Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 289 |
Growth Allocation Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 148 | 85
Mid Cap Value Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 102 |
Other [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 82 | 45
Quoted prices in active markets for identical assets - Level 1 [Member] | Premier Money Market Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 3,404 | 2,285
Quoted prices in active markets for identical assets - Level 1 [Member] | Low Duration Bond Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 1,604 | 2,096
Quoted prices in active markets for identical assets - Level 1 [Member] | Intermediate Term Bond Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 1,154 | 2,181
Quoted prices in active markets for identical assets - Level 1 [Member] | Strategic Income Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 999 | 1,008
Quoted prices in active markets for identical assets - Level 1 [Member] | Limited Term Bond Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 602 | 3,107
Quoted prices in active markets for identical assets - Level 1 [Member] | Large Blend Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 289 |
Quoted prices in active markets for identical assets - Level 1 [Member] | Growth Allocation Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 148 | 85
Quoted prices in active markets for identical assets - Level 1 [Member] | Mid Cap Value Fund [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | 102 |
Quoted prices in active markets for identical assets - Level 1 [Member] | Other [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets measured at fair value on a recurring basis | $ 82 | $ 45

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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