Summary of Significant Accounting Policies (Additional Cash Flow) (Details) - USD ($) $ in Thousands	12 Months Ended			24 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021
Noncash or Part Noncash Acquisitions [Line Items]
Total net adjustment	$ (36,200)	$ 9,900	$ 4,400
Adjustments to other comprehensive income related to underfunding of pension and SERP plans and changes in fair value of derivative financial instruments, tax	(10,900)	2,900	1,300
Dividends declared but not yet paid	5,600	5,600	5,500	$ 5,600
Accrual for purchases of property and equipment	1,700	2,000
Gain (Loss) on Disposition of Business	457	(234)	493
Gain (Loss) on Disposition of Business, Non Cash	457	(234)	493
Noncash Consideration on Sale of Aircraft	(827)	0	0
K-MAX® program
Noncash or Part Noncash Acquisitions [Line Items]
Noncash Consideration on Sale of Aircraft	$ 800
U.K. Composites [Member]
Noncash or Part Noncash Acquisitions [Line Items]
Gain (Loss) on Disposition of Business		$ (200)	$ (36,300)	$ (36,519)