Revenue Recognition - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jul. 30, 2022	Jul. 30, 2022	Jan. 31, 2022
Contract liabilities and extended warranties	$ 281,000	$ 281,000	$ 262,000
Contract with customer liability revenue recognized including additions	177,000	177,000
Contract assets balance	1,300,000	1,300,000	$ 1,300,000
Additional contract costs	100,000	100,000
Amortization of incremental direct costs	19,000	37,000
Deferred incremental direct contract costs reported in other current assets	100,000	100,000
Capitalized contract cost net long term and short term	$ 1,400,000	$ 1,400,000
Capitalized contract costs additional amounts incurred amortization period		19 years