Segment Information - Net Sales and Segment Operating Profit for Each Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
Apr. 28, 2018	Apr. 29, 2017
Segment Reporting Information [Line Items]
Revenue	$ 31,487	$ 24,458
Corporate Expenses	2,653	1,856
Operating Income	1,265	707
Other Expense	(270)	(48)
Income Before Income Taxes	995	659
Income Tax Provision	181	147
Net Income	814	512
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	3,918	2,563
Operating Segments [Member] \| Product Identification [Member]
Segment Reporting Information [Line Items]
Revenue	19,953	18,646
Operating Income	1,661	2,492
Operating Segments [Member] \| T&M [Member]
Segment Reporting Information [Line Items]
Revenue	11,534	5,812
Operating Income	2,257	71
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Corporate Expenses	$ 2,653	$ 1,856

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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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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