v3.26.1
Goodwill and Other Intangible Assets (Schedule of Changes in Intangible Assets and Goodwill) (Details)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
USD ($)
Finite-lived Intangible Assets [Roll Forward]  
Beginning balance $ 14,972
Amortization (1,294)
Currency Translation (283)
Ending balance 13,395
Goodwill [Roll Forward]  
Beginning balance 162,507
Ending balance 160,552
Indefinite-Lived Intangible Assets Including Goodwill [Roll Forward]  
Beginning Balance 168,963
Currency Translation (2,139)
Ending Balance 166,824
Heimbach Trade name  
Intangible Asset, Indefinite-Lived [Roll Forward]  
Beginning Balance 6,456
Currency Translation (184)
Ending Balance 6,272
MC Goodwill  
Goodwill [Roll Forward]  
Beginning balance 69,911
Currency Translation (1,429)
Ending balance 68,482
AEC Goodwill  
Goodwill [Roll Forward]  
Beginning balance 92,596
Currency Translation (526)
Ending balance 92,070
AEC Trademarks and trade names  
Finite-lived Intangible Assets [Roll Forward]  
Beginning balance 0
Amortization 0
Currency Translation 0
Ending balance 0
AEC Technology  
Finite-lived Intangible Assets [Roll Forward]  
Beginning balance 2,416
Amortization (299)
Currency Translation (72)
Ending balance 2,045
AEC Intellectual property  
Finite-lived Intangible Assets [Roll Forward]  
Beginning balance 745
Amortization (43)
Currency Translation 0
Ending balance 702
AEC Customer relationships  
Finite-lived Intangible Assets [Roll Forward]  
Beginning balance 5,229
Amortization (472)
Currency Translation (45)
Ending balance 4,712
Heimbach Developed technology  
Finite-lived Intangible Assets [Roll Forward]  
Beginning balance 6,582
Amortization (480)
Currency Translation (166)
Ending balance $ 5,936