Business Segment Information - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Net Revenues	$ 712,537	$ 645,413	$ 628,941
Segment Operating Income (Loss)	39,788	48,881	45,506
Depreciation and Amortization Expenses	31,421	28,389	28,850
Capital Expenditures	19,551	15,934	13,607
Electronic Systems
Segment Reporting Information [Line Items]
Net Revenues	440,638	412,648
Structural Systems
Segment Reporting Information [Line Items]
Net Revenues	271,899	232,765
Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income (Loss)	67,101	77,863	71,478
Operating Segments | Electronic Systems
Segment Reporting Information [Line Items]
Net Revenues	440,638	412,648	392,633
Segment Operating Income (Loss)	49,876	57,629	51,894
Depreciation and Amortization Expenses	13,974	13,823	14,038
Capital Expenditures	10,717	7,471	5,037
Operating Segments | Structural Systems
Segment Reporting Information [Line Items]
Net Revenues	271,899	232,765	236,308
Segment Operating Income (Loss)	17,225	20,234	19,584
Depreciation and Amortization Expenses	17,212	14,331	14,559
Capital Expenditures	8,834	8,463	8,570
Corporate Administration
Segment Reporting Information [Line Items]
Corporate General and Administrative Expenses	(27,313)	(28,982)	(25,972)
Depreciation and Amortization Expenses	235	235	253
Capital Expenditures	$ 0	$ 0	$ 0