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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The changes in the carrying amount of goodwill for the period ending December 31, 2023, by operating segment, were as follows:
(Dollars in millions) | Advanced Electronics Solutions |  | Elastomeric Material Solutions |  | Other |  | Total
December 31, 2022 | $ | 115.4 |  |  | $ | 234.8 |  |  | $ | 2.2 |  |  | $ | 352.4 |
Foreign currency translation adjustment | 2.3 |  |  | 5.1 |  |  | — |  |  | 7.4 |
December 31, 2023 | $ | 117.7 |  |  | $ | 239.9 |  |  | $ | 2.2 |  |  | $ | 359.8 |
Schedule of Intangible Assets | The carrying amount of other intangible assets were as follows:
| December 31, 2023 |  | December 31, 2022
(Dollars in millions) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships | $ | 177.9 |  |  | $ | 90.0 |  |  | $ | 87.9 |  |  | $ | 178.6 |  |  | $ | 85.6 |  |  | $ | 93.0 |
Technology | 77.4 |  |  | 58.1 |  |  | 19.3 |  |  | 82.4 |  |  | 59.1 |  |  | 23.3 |
Trademarks and trade names | 19.4 |  |  | 7.4 |  |  | 12.0 |  |  | 19.1 |  |  | 6.6 |  |  | 12.5 |
Covenants not to compete | 1.3 |  |  | 0.9 |  |  | 0.4 |  |  | 1.9 |  |  | 1.2 |  |  | 0.7 |
Total definite-lived other intangible assets | 276.0 |  |  | 156.4 |  |  | 119.6 |  |  | 282.0 |  |  | 152.5 |  |  | 129.5 |
Indefinite-lived other intangible asset | 4.3 |  |  | — |  |  | 4.3 |  |  | 4.2 |  |  | — |  |  | 4.2 |
Total other intangible assets | $ | 280.3 |  |  | $ | 156.4 |  |  | $ | 123.9 |  |  | $ | 286.2 |  |  | $ | 152.5 |  |  | $ | 133.7 |
Schedule of Weighted Average Amortization Period, by Intangible Asset Class | The weighted average amortization period as of December 31, 2023, by definite-lived other intangible asset class, is presented in the table below:
Definite-Lived Other Intangible Asset Class | Weighted Average Remaining Amortization Period
Customer relationships | 7.4 years
Technology | 3.3 years
Trademarks and trade names | 10.0 years
Covenants not to compete | 0.5 years
Total definite-lived other intangible assets | 7.0 years

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