Goodwill and Other Intangible Assets (Schedule of Changes in Intangible Assets and Goodwill) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2025 USD ($)
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 32,415
Other Changes	(315)
Amortization	(2,604)
Currency Translation	1,447
Ending balance	30,943
Goodwill [Roll Forward]
Beginning balance	176,261
Ending balance	184,333
Indefinite-Lived Intangible Assets Including Goodwill [Roll Forward]
Beginning Balance	181,973
Other Changes	0
Currency Translation	8,818
Ending Balance	190,791
MC Goodwill
Goodwill [Roll Forward]
Beginning balance	63,988
Other Changes	0
Currency Translation	5,913
Ending balance	69,901
AEC Goodwill
Goodwill [Roll Forward]
Beginning balance	112,273
Other Changes	0
Currency Translation	2,159
Ending balance	114,432
Heimbach Trade name
Indefinite-Lived Intangible Assets [Roll Forward]
Beginning Balance	5,712
Other Changes	0
Currency Translation	746
Ending Balance	6,458
AEC Trademarks and trade names
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	11
Other Changes	0
Amortization	(6)
Currency Translation	0
Ending balance	5
AEC Technology
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	2,680
Other Changes	0
Amortization	(308)
Currency Translation	349
Ending balance	2,721
AEC Intellectual property
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	828
Other Changes	0
Amortization	(42)
Currency Translation	0
Ending balance	786
AEC Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	21,892
Other Changes	0
Amortization	(1,751)
Currency Translation	225
Ending balance	20,366
Heimbach Developed technology
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	7,004
Other Changes	(315)
Amortization	(497)
Currency Translation	873
Ending balance	$ 7,065