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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. 30, 2016
Aug. 01, 2015
Jul. 30, 2016
Aug. 01, 2015
Segment Reporting Information [Line Items]        
Net Sales $ 25,339 $ 23,938 $ 49,449 $ 46,144
Corporate Expenses 2,025 1,783 3,676 3,241
Operating Income 1,748 1,834 3,295 3,282
Other Income (Expense)-Net 40 21 (12) 254
Income Before Income Taxes 1,788 1,855 3,283 3,536
Income Tax Provision 496 687 972 1,158
Net Income 1,292 1,168 2,311 2,378
Operating Segments [Member]        
Segment Reporting Information [Line Items]        
Operating Income 3,773 3,617 6,971 6,523
Operating Segments [Member] | Product Identification [Member]        
Segment Reporting Information [Line Items]        
Net Sales 17,628 17,100 34,234 32,744
Operating Income 2,632 2,720 4,628 4,698
Operating Segments [Member] | T&M [Member]        
Segment Reporting Information [Line Items]        
Net Sales 7,711 6,838 15,215 13,400
Operating Income $ 1,141 $ 897 $ 2,343 $ 1,825