Business Segment Information - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net Revenues	$ 756,992	$ 712,537	$ 645,413
Segment Operating Income (Loss)	28,917	39,788	48,881
Depreciation and Amortization Expenses	32,571	31,421	28,389
Capital Expenditures	19,134	19,551	15,934
Electronic Systems
Segment Reporting Information [Line Items]
Net Revenues	430,136	440,638
Structural Systems
Segment Reporting Information [Line Items]
Net Revenues	326,856	271,899
Operating Segments
Segment Reporting Information [Line Items]
Segment Operating Income (Loss)	65,546	67,101	77,863
Operating Segments | Electronic Systems
Segment Reporting Information [Line Items]
Net Revenues	430,136	440,638	412,648
Segment Operating Income (Loss)	42,086	49,876	57,629
Depreciation and Amortization Expenses	14,276	13,974	13,823
Capital Expenditures	6,007	10,717	7,471
Operating Segments | Structural Systems
Segment Reporting Information [Line Items]
Net Revenues	326,856	271,899	232,765
Segment Operating Income (Loss)	23,460	17,225	20,234
Depreciation and Amortization Expenses	18,060	17,212	14,331
Capital Expenditures	13,127	8,834	8,463
Segment Reconciling Items
Segment Reporting Information [Line Items]
Corporate General and Administrative Expenses	(36,629)	(27,313)	(28,982)
Corporate Administration
Segment Reporting Information [Line Items]
Depreciation and Amortization Expenses	235	235	235
Capital Expenditures	$ 0	$ 0	$ 0