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Segment Information - Net Sales and Segment Operating Profit for Each Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Segment Reporting Information [Line Items]
Revenue	$ 27,483	$ 25,339	$ 51,941	$ 49,449
Corporate Expenses	2,327	2,025	4,183	3,676
Operating Income	942	1,748	1,649	3,295
Other Income (Expense)-Net	16	40	(33)	(12)
Income Before Income Taxes	958	1,788	1,616	3,283
Income Tax Provision	231	496	378	972
Net Income	727	1,292	1,238	2,311
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	3,269	3,773	5,832	6,971
Operating Segments [Member] | Product Identification [Member]
Segment Reporting Information [Line Items]
Revenue	20,841	17,628	39,487	34,234
Operating Income	2,612	2,632	5,104	4,628
Operating Segments [Member] | T&M [Member]
Segment Reporting Information [Line Items]
Revenue	6,642	7,711	12,454	15,215
Operating Income	657	1,141	728	2,343
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Corporate Expenses	$ 2,327	$ 2,025	$ 4,183	$ 3,676

X

- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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