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Goodwill and Intangible Assets
3 Months Ended
Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
Goodwill
The changes in the net carrying amount of goodwill by operating segment were as follows:
(Dollars in millions)Advanced Electronics SolutionsElastomeric Material SolutionsOtherTotal
December 31, 2025$51.7 $249.5 $2.2 $303.4 
Foreign currency translation adjustment— (2.2)— (2.2)
March 31, 2026$51.7 $247.3 $2.2 $301.2 
Intangible Assets
The carrying amount of intangible assets were as follows:
March 31, 2026December 31, 2025
(Dollars in millions)Gross Carrying AmountAccumulated AmortizationNet Carrying AmountGross Carrying AmountAccumulated ImpairmentAccumulated AmortizationNet Carrying Amount
Customer relationships$179.8 $106.9 $72.9 $180.9 $— $105.6 $75.3 
Technology78.7 67.2 11.5 79.4 — 67.2 12.2 
Trademarks and trade names19.8 8.4 11.4 20.1 — 8.3 11.8 
Total definite-lived intangible assets278.3 182.5 95.8 280.4 — 181.1 99.3 
Indefinite-lived intangible asset   4.5 4.5 — — 
Total intangible assets$278.3 $182.5 $95.8 $284.9 $4.5 $181.1 $99.3 
In the table above, gross carrying amounts and accumulated amortization may differ from prior periods due to foreign exchange rate fluctuations.
The amortization expense related to intangible assets was as follows:
Three Months Ended
(Dollars in millions)March 31, 2026March 31, 2025
Amortization expense$2.7 $2.7 
The estimated future amortization expense is $8.0 million, $10.2 million, $8.0 million, $7.5 million, and $7.1 million in 2026, 2027, 2028, 2029, and 2030, respectively. These amounts could vary based on changes in foreign currency exchange rates.
The weighted average amortization period as of March 31, 2026, by intangible asset class, is presented in the table below:
Weighted Average Remaining Amortization Period
Customer relationships6.6 years
Technology2.6 years
Trademarks and trade names8.5 years
Total intangible assets6.3 years