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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
--- | --- | ---
Nov. 02, 2019 | Aug. 03, 2019 | May 04, 2019 | Oct. 27, 2018 | Jul. 28, 2018 | Apr. 28, 2018 | Nov. 02, 2019 | Oct. 27, 2018
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenue | $ 33,318 |  |  | $ 34,196 |  |  | $ 102,967 | $ 99,490
Corporate Expenses | 2,830 |  |  | 2,836 |  |  | 8,445 | 8,298
Operating Income | 447 |  |  | 2,362 |  |  | 4,078 | 5,791
Other Expense, Net | (238) |  |  | (538) |  |  | (788) | (1,320)
Income before Income Taxes | 209 |  |  | 1,824 |  |  | 3,290 | 4,471
Income Tax (Benefit) Provision | (247) |  |  | 407 |  |  | 182 | 1,046
Net Income | 456 | $ 951 | $ 1,700 | 1,417 | $ 1,194 | $ 814 | 3,108 | 3,425
Product Identification [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenue | 21,749 |  |  | 21,684 |  |  | 67,484 | 63,407
T&M [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenue | 11,569 |  |  | 12,512 |  |  | 35,483 | 36,083
Operating Segments [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Operating Income | 3,277 |  |  | 5,198 |  |  | 12,523 | 14,089
Operating Segments [Member] | Product Identification [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Operating Income | 1,880 |  |  | 2,014 |  |  | 6,990 | 5,833
Operating Segments [Member] | T&M [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Operating Income | $ 1,397 |  |  | $ 3,184 |  |  | $ 5,533 | $ 8,256

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