Business Segment Information - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2023	Apr. 02, 2022
Segment Reporting Information [Line Items]
Net Revenues	$ 181,191	$ 163,481
Segment Operating Income	6,372	9,123
Depreciation and Amortization Expenses	7,989	7,768
Capital Expenditures	4,981	5,068
Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income	14,756	14,298
Segment Reconciling Items
Segment Reporting Information [Line Items]
Corporate General and Administrative Expenses	(8,384)	(5,175)
Corporate Administration
Segment Reporting Information [Line Items]
Depreciation and Amortization Expenses	59	59
Capital Expenditures	0	0
Electronic Systems
Segment Reporting Information [Line Items]
Net Revenues	105,626	97,466
Electronic Systems | Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income	10,011	9,411
Depreciation and Amortization Expenses	3,498	3,506
Capital Expenditures	1,851	1,696
Structural Systems
Segment Reporting Information [Line Items]
Net Revenues	75,565	66,015
Structural Systems | Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income	4,745	4,887
Depreciation and Amortization Expenses	4,432	4,203
Capital Expenditures	$ 3,130	$ 3,372