Business Segment Information - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Segment Reporting Information [Line Items]
Net Revenues	$ 187,320	$ 174,198	$ 368,511	$ 337,679
Segment Operating Income (1)	5,005	7,754	11,377	16,877
Depreciation and Amortization Expenses	7,954	7,898	15,943	15,666
Capital Expenditures	6,034	5,429	11,015	10,497
Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income (1)	14,913	14,875	29,669	29,173
Segment Reconciling Items
Segment Reporting Information [Line Items]
Corporate General and Administrative Expenses	(9,908)	(7,121)	(18,292)	(12,296)
Corporate Administration
Segment Reporting Information [Line Items]
Depreciation and Amortization Expenses	58	58	117	117
Capital Expenditures	0	0	0	0
Electronic Systems
Segment Reporting Information [Line Items]
Net Revenues	107,124	109,732	212,750	207,198
Electronic Systems | Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income (1)	9,528	13,610	19,539	23,021
Depreciation and Amortization Expenses	3,561	3,484	7,059	6,990
Capital Expenditures	1,923	2,943	3,774	4,639
Structural Systems
Segment Reporting Information [Line Items]
Net Revenues	80,196	64,466	155,761	130,481
Structural Systems | Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income (1)	5,385	1,265	10,130	6,152
Depreciation and Amortization Expenses	4,335	4,356	8,767	8,559
Capital Expenditures	$ 4,111	$ 2,486	$ 7,241	$ 5,858