Business Segment Information - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Segment Reporting Information [Line Items]
Net Revenues	$ 197,000	$ 187,320	$ 387,847	$ 368,511
Segment Operating Income	13,924	5,005	26,546	11,377
Depreciation and Amortization Expenses	8,245	7,954	16,598	15,943
Capital Expenditures	3,219	6,034	7,964	11,015
Operating segments
Segment Reporting Information [Line Items]
Net Revenues	197,000	187,320	387,847	368,511
Segment Operating Income	27,365	14,913	49,202	29,669
Segment reconciling items
Segment Reporting Information [Line Items]
Corporate General and Administrative Expenses	(13,441)	(9,908)	(22,656)	(18,292)
Corporate Administration
Segment Reporting Information [Line Items]
Depreciation and Amortization Expenses	36	58	95	117
Capital Expenditures	723	0	3,148	0
Electronic Systems
Segment Reporting Information [Line Items]
Net Revenues	101,440	107,124	208,979	212,750
Electronic Systems | Operating segments
Segment Reporting Information [Line Items]
Net Revenues	101,440	107,124	208,979	212,750
Segment Operating Income	16,806	9,528	35,775	19,539
Depreciation and Amortization Expenses	3,662	3,561	7,294	7,059
Capital Expenditures	1,143	1,923	1,939	3,774
Structural Systems
Segment Reporting Information [Line Items]
Net Revenues	95,560	80,196	178,868	155,761
Structural Systems | Operating segments
Segment Reporting Information [Line Items]
Net Revenues	95,560	80,196	178,868	155,761
Segment Operating Income	10,559	5,385	13,427	10,130
Depreciation and Amortization Expenses	4,547	4,335	9,209	8,767
Capital Expenditures	$ 1,353	$ 4,111	$ 2,877	$ 7,241