Segment Information - Net Sales and Segment Operating Profit (Loss) for Each Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jul. 30, 2022	Apr. 30, 2022	Jul. 31, 2021	May 01, 2021	Jul. 30, 2022	Jul. 31, 2021
Segment Reporting Information [Line Items]
Revenue	$ 32,259		$ 29,845		$ 63,269	$ 58,923
Corporate Expenses	2,571		2,664		5,131	5,008
Operating Income	1,235		3,452		1,999	4,186
Other Income (Expense), Net	(431)		4,266		(710)	3,897
Income Before Income Taxes	804		7,718		1,289	8,083
Income Tax Provision (Benefit)	220		699		280	471
Net Income	584	$ 425	7,019	$ 593	1,009	7,612
Product Identification [Member]
Segment Reporting Information [Line Items]
Revenue	23,382		23,492		45,106	46,590
T&M [Member]
Segment Reporting Information [Line Items]
Revenue	8,877		6,353		18,163	12,333
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	3,806		6,116		7,130	9,194
Operating Segments [Member] | Product Identification [Member]
Segment Reporting Information [Line Items]
Operating Income	1,644		4,406		3,058	7,134
Operating Segments [Member] | T&M [Member]
Segment Reporting Information [Line Items]
Operating Income	2,162		1,710		4,072	2,060
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Corporate Expenses	$ 2,571		$ 2,664		$ 5,131	$ 5,008