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Goodwill and Intangible Assets
 12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
The changes in the carrying amount of goodwill by reportable segment were as follows:
($ in millions)Proprietary ProductsContract-Manufactured ProductsTotal
Balance, December 31, 2023$78.9 $29.6 $108.5 
Foreign currency translation(2.1)(0.4)(2.5)
Balance, December 31, 202476.8 29.2 106.0 
Foreign currency translation3.8 0.7 4.5 
Adjustment to goodwill related to business classified as held for sale as of December 31, 2025(0.6)— (0.6)
Balance, December 31, 2025$80.0 $29.9 $109.9 
As of December 31, 2025, we had $0.1 million of accumulated goodwill impairment losses.
Intangible assets and accumulated amortization as of December 31 were as follows:
20252024
($ in millions)CostAccumulated amortizationNetCostAccumulated amortizationNet
Patents and licensing$24.7 $(24.1)$0.6 $24.7 $(23.0)$1.7 
Technology3.3 (2.9)0.4 3.3 (2.7)0.6 
Trademarks1.2 (1.2)— 1.2 (1.2)— 
Customer relationships39.0 (32.5)6.5 38.9 (30.8)8.1 
Customer contracts8.1 (7.9)0.2 8.0 (7.6)0.4 
$76.3 $(68.6)$7.7 $76.1 $(65.3)$10.8 
The cost basis of intangible assets includes a foreign currency translation gain of $0.2 million and a loss of $0.7 million for the years ended December 31, 2025 and 2024, respectively.
Amortization expense for the years ended December 31, 2025, 2024 and 2023 was $2.8 million, $3.6 million and $3.6 million, respectively. Additionally, intangible asset impairment expense for the years ended December 31, 2025, 2024 and 2023 was $0.5 million, $0.0 million and $0.0 million, respectively. Estimated annual amortization expense for the next five years is as follows: 2026 - $2.2 million, 2027 - $2.0 million, 2028 - $1.8 million, 2029 - $1.0 million and 2030 - $0.4 million.