Fair Value - Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Jan. 31, 2021	May 03, 2020	Feb. 02, 2020
Premier Money Market Fund [Member]
Assets:
Investments at fair value	$ 7,771	$ 7,496	$ 6,334
Inflation Protected Bond Funds [Member]
Assets:
Investments at fair value	2,893		2,837
Short Term Bond Funds [Member]
Assets:
Investments at fair value	2,655	923	4,743
Growth Allocation Fund [Member]
Assets:
Investments at fair value	299	219	239
Strategic Income Fund [Member]
Assets:
Investments at fair value			1,001
Moderate Allocation Fund [Member]
Assets:
Investments at fair value	80	63	138
Other [Member]
Assets:
Investments at fair value	82	56	92
Quoted prices in active markets for identical assets - Level 1 [Member] | Premier Money Market Fund [Member]
Assets:
Investments at fair value	7,771	7,496	6,334
Quoted prices in active markets for identical assets - Level 1 [Member] | Inflation Protected Bond Funds [Member]
Assets:
Investments at fair value	2,893		2,837
Quoted prices in active markets for identical assets - Level 1 [Member] | Short Term Bond Funds [Member]
Assets:
Investments at fair value	2,655	923	4,743
Quoted prices in active markets for identical assets - Level 1 [Member] | Growth Allocation Fund [Member]
Assets:
Investments at fair value	299	219	239
Quoted prices in active markets for identical assets - Level 1 [Member] | Strategic Income Fund [Member]
Assets:
Investments at fair value			1,001
Quoted prices in active markets for identical assets - Level 1 [Member] | Moderate Allocation Fund [Member]
Assets:
Investments at fair value	80	63	138
Quoted prices in active markets for identical assets - Level 1 [Member] | Other [Member]
Assets:
Investments at fair value	$ 82	$ 56	$ 92