Segment Information - Net Sales and Segment Operating Profit (Loss) for Each Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	May 02, 2020	May 04, 2019
Segment Reporting Information [Line Items]
Revenue	$ 30,919	$ 36,181
Corporate Expenses	2,327	2,999
Operating Income	663	2,468
Other Expense, Net	(349)	(368)
Income Before Income Taxes	314	2,100
Income Tax (Benefit) Provision	(118)	400
Net Income	432	1,700
PI [Member]
Segment Reporting Information [Line Items]
Revenue	22,380	23,591
T&M [Member]
Segment Reporting Information [Line Items]
Revenue	8,539	12,590
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	2,990	5,467
Operating Segments [Member] | PI [Member]
Segment Reporting Information [Line Items]
Operating Income	3,146	2,886
Operating Segments [Member] | T&M [Member]
Segment Reporting Information [Line Items]
Operating Income	(156)	2,581
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Corporate Expenses	$ 2,327	$ 2,999