Business Segment Information - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Segment Reporting Information [Line Items]
Net Revenues	$ 196,250	$ 186,590	$ 564,761	$ 524,269
Segment Operating Income	8,609	13,217	19,986	30,094
Depreciation and Amortization Expenses	8,478	7,669	24,421	23,335
Capital Expenditures	4,780	4,367	15,795	14,864
Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income	19,453	20,568	49,122	49,741
Segment Reconciling Items
Segment Reporting Information [Line Items]
Corporate General and Administrative Expenses	(10,844)	(7,351)	(29,136)	(19,647)
Corporate Administration
Segment Reporting Information [Line Items]
Depreciation and Amortization Expenses	59	59	176	176
Capital Expenditures	0	0	0	0
Electronic Systems
Segment Reporting Information [Line Items]
Net Revenues	110,707	113,404	323,457	320,602
Electronic Systems | Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income	12,710	13,881	32,249	36,902
Depreciation and Amortization Expenses	3,567	3,510	10,626	10,500
Capital Expenditures	978	3,192	4,752	7,831
Structural Systems
Segment Reporting Information [Line Items]
Net Revenues	85,543	73,186	241,304	203,667
Structural Systems | Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income	6,743	6,687	16,873	12,839
Depreciation and Amortization Expenses	4,852	4,100	13,619	12,659
Capital Expenditures	$ 3,802	$ 1,175	$ 11,043	$ 7,033