Segment Information - Net Sales and Segment Operating Profit (Loss) for Each Reporting Segment (Detail) - USD ($)	3 Months Ended						9 Months Ended
	Nov. 02, 2024	Aug. 03, 2024	Apr. 27, 2024	Oct. 28, 2023	Jul. 29, 2023	Apr. 29, 2023	Nov. 02, 2024	Oct. 28, 2023
Segment Reporting Information [Line Items]
Revenue	$ 40,422,000			$ 37,549,000			$ 113,922,000	$ 108,493,000
General and Administrative Expenses	3,855,000			2,734,000			12,343,000	8,514,000
Operating Income	1,264,000			4,618,000			3,671,000	4,882,000
Interest Expense	944,000			630,000			2,363,000	1,919,000
Other (Income)/Expense, net	46,000			287,000			337,000	242,000
Income Before Income Taxes	274,000			3,701,000			971,000	2,721,000
Income Tax Provision (Benefit)	34,000			949,000			(139,000)	738,000
Net Income	240,000	$ (311,000)	$ 1,181,000	2,752,000	$ (1,617,000)	$ 848,000	1,110,000	1,983,000
PI [Member]
Segment Reporting Information [Line Items]
Revenue	26,317,000			26,543,000			76,667,000	77,416,000
T&M [Member]
Segment Reporting Information [Line Items]
Revenue	14,105,000			11,006,000			37,255,000	31,077,000
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	5,119,000			7,352,000			16,014,000	13,396,000
Operating Segments [Member] | PI [Member]
Segment Reporting Information [Line Items]
Operating Income	1,868,000			4,794,000			7,208,000	6,848,000
Operating Segments [Member] | T&M [Member]
Segment Reporting Information [Line Items]
Operating Income	3,251,000			2,558,000			8,806,000	6,548,000
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
General and Administrative Expenses	$ 3,855,000			$ 2,734,000			$ 12,343,000	$ 8,514,000