Business Segment Information - Segment Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total Assets	$ 978,735	$ 837,347
Goodwill and Intangibles	345,458	295,574
Operating Segments | Electronic Systems
Segment Reporting Information [Line Items]
Total Assets	490,814	448,606
Goodwill and Intangibles	191,789	201,077
Operating Segments | Structural Systems
Segment Reporting Information [Line Items]
Total Assets	408,118	325,604
Goodwill and Intangibles	153,669	94,497
Corporate Administration
Segment Reporting Information [Line Items]
Total Assets	$ 79,803	$ 63,137