Exit and Disposal Activity - Summary of Restructuring Expense and Restructuring Related Charges (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Oct. 30, 2022	Oct. 30, 2022
Restructuring related charge
Restructuring expense	$ 615,000	$ 615,000
Restructuring related charge	$ (98,000)	(98,000)
Exit and Disposal Activity [Member]
Restructuring related charge
Restructuring expense		515,000
Restructuring expense and restructuring related charges		713,000
Employee Termination Benefits [Member] | Exit and Disposal Activity [Member]
Restructuring related charge
Restructuring expense		468,000
Loss on Disposal and Markdowns of Inventory [Member] | Exit and Disposal Activity [Member]
Restructuring related charge
Restructuring related charge		98,000
Loss on Disposal of Equipment [Member] | Exit and Disposal Activity [Member]
Restructuring related charge
Restructuring expense		80,000
Lease Termination Costs [Member] | Exit and Disposal Activity [Member]
Restructuring related charge
Restructuring expense		47,000
Other Associated Costs [Member] | Exit and Disposal Activity [Member]
Restructuring related charge
Restructuring expense		$ 20,000