Intangible Assets - Narrative (Detail) - USD ($)	3 Months Ended
	Jul. 31, 2022	May 01, 2022	Aug. 01, 2021
Intangible Assets [Line Items]
Asset impairment charges	$ 0
Gross carrying amount of customer relationships	3,100,000	$ 3,100,000	$ 3,100,000
Gross carrying amount of non-compete agreement	2,000,000.0	2,000,000.0	2,000,000.0
Customer Relationships [Member]
Intangible Assets [Line Items]
Accumulated amortization	1,600,000	1,500,000	1,300,000
Remaining amortization expense for the fiscal year	226,000
Remaining amortization expense for the first fiscal year	301,000
Remaining amortization expense for the second fiscal year	301,000
Remaining amortization expense for the third fiscal year	301,000
Remaining amortization expense for the fourth fiscal year	278,000
Remaining amortization expense for the fiscal year thereafter	$ 154,000
Weighted average remaining amortization period	5 years 6 months
Customer Relationships [Member] | Minimum [Member]
Intangible Assets [Line Items]
Useful life	9 years
Customer Relationships [Member] | Maximum [Member]
Intangible Assets [Line Items]
Useful life	17 years
Non-Compete Agreement [Member]
Intangible Assets [Line Items]
Useful life	15 years
Accumulated amortization	$ 1,600,000	$ 1,600,000	$ 1,600,000
Remaining amortization expense for the fiscal year	56,000
Remaining amortization expense for the first fiscal year	76,000
Remaining amortization expense for the second fiscal year	76,000
Remaining amortization expense for the third fiscal year	76,000
Remaining amortization expense for the fourth fiscal year	76,000
Remaining amortization expense for the fiscal year thereafter	$ 73,000
Weighted average remaining amortization period	5 years 9 months 18 days