Goodwill and Other Intangible Assets (Changes in Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Ending Gross Amount	$ 344,010	$ 291,443
Finite-lived intangible assets, Accumulated Amortization	(252,454)	(249,318)
Indefinite-lived intangible assets, Ending Gross Amount	98,721	81,824
Indefinite-lived intangible assets, Accumulated Amortization	$ (1,673)	(1,701)
Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	40 years
Engineering drawings
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Ending Gross Amount	$ 89,529	92,105
Finite-lived intangible assets, Accumulated Amortization	$ (89,529)	(91,808)
Engineering drawings | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	10 years
Engineering drawings | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	22 years
Existing customer relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)			5 years
Finite-lived intangible assets, Ending Gross Amount	$ 126,761	80,643
Finite-lived intangible assets, Accumulated Amortization	$ (79,039)	(76,121)
Existing customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	5 years
Existing customer relationships | Minimum | MOGAS
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	5 years
Existing customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	10 years
Existing customer relationships | Maximum | MOGAS
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	10 years
Patents
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Ending Gross Amount	$ 25,086	26,388
Finite-lived intangible assets, Accumulated Amortization	$ (25,086)	(26,388)
Patents | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	9 years
Patents | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	16 years
Other
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Ending Gross Amount	$ 102,634	92,307
Finite-lived intangible assets, Accumulated Amortization	$ (58,800)	$ (55,001)
Other | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	1 year
Other | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (Years)	40 years