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Segment Information - Net Sales and Segment Operating Profit for Each Reporting Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 28, 2017 | Oct. 29, 2016 | Oct. 28, 2017 | Oct. 29, 2016
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 28,760 | $ 23,342 | $ 80,701 | $ 72,791
Corporate Expenses | 2,597 | 1,891 | 6,780 | 5,566
Operating Income | 1,632 | 1,834 | 3,281 | 5,128
Other Expense, Net | (12) | (60) | (45) | (72)
Income Before Income Taxes | 1,620 | 1,774 | 3,236 | 5,056
Income Tax Provision | 201 | 623 | 579 | 1,595
Net Income | 1,419 | 1,151 | 2,657 | 3,461
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating Income | 4,229 | 3,725 | 10,061 | 10,694
Operating Segments [Member] | Product Identification [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 20,458 | 16,892 | 59,945 | 51,126
Operating Income | 2,657 | 2,443 | 7,761 | 7,069
Operating Segments [Member] | T&M [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 8,302 | 6,450 | 20,756 | 21,665
Operating Income | 1,572 | 1,282 | 2,300 | 3,625
Corporate Expenses [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Corporate Expenses | $ 2,597 | $ 1,891 | $ 6,780 | $ 5,566

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