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Segment Information - Net Sales and Segment Operating Profit (Loss) for Each Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended							9 Months Ended
	Oct. 31, 2020	Aug. 01, 2020	May 02, 2020	Nov. 03, 2019	Nov. 02, 2019	Aug. 03, 2019	May 04, 2019	Oct. 31, 2020	Nov. 02, 2019
Segment Reporting Information [Line Items]
Revenue	$ 28,017				$ 33,318			$ 86,595	$ 102,967
Corporate Expenses	2,353				2,830			7,214	8,445
Operating Income	417				447			1,285	4,078
Other Expense, Net	(437)				(238)			(459)	(788)
Income (Loss) Before Income Taxes	(20)				209			826	3,290
Income Tax (Benefit) Provision	(32)			$ (247)	(247)			379	182
Net Income	12	$ 3	$ 432		456	$ 951	$ 1,700	447	3,108
Product Identification [Member]
Segment Reporting Information [Line Items]
Revenue	22,898				21,749			66,907	67,484
T&M [Member]
Segment Reporting Information [Line Items]
Revenue	5,119				11,569			19,688	35,483
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	2,770				3,277			8,499	12,523
Operating Segments [Member] | Product Identification [Member]
Segment Reporting Information [Line Items]
Operating Income	3,521				1,880			9,813	6,990
Operating Segments [Member] | T&M [Member]
Segment Reporting Information [Line Items]
Operating Income	(751)				1,397			(1,314)	5,533
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Corporate Expenses	$ 2,353				$ 2,830			$ 7,214	$ 8,445

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