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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2025
Goodwill and Other Intangible Assets |
Summary of gross carrying amounts and accumulated amortization of other intangible assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31, | ​
(Dollars in thousands) |  | 2025 |  | 2024 |
Gross carrying amount | ​ | $ | 689,566 | ​ | $ | 274,829 | ​
Accumulated amortization | ​ |  | (279,676) | ​ |  | (208,371) | ​
​ | ​ | $ | 409,890 | ​ | $ | 66,458 | ​
Schedule of estimated amortization expense for other intangibles for each of the next five quarters | ​
​ | ​ | ​ | ​ | ​
(Dollars in thousands) | ​ | ​ | ​ | ​
Quarter ending: |  | ​ |  |
December 31, 2025 | ​ | $ | 23,417 | ​
March 31, 2026 | ​ |  | 21,304 | ​
June 30, 2026 | ​ |  | 21,041 | ​
September 30, 2026 | ​ |  | 20,628 | ​
December 31, 2026 | ​ | ​ | 20,628 | ​
Thereafter | ​ |  | 297,213 | ​
​ | ​ | $ | 404,231 | ​
​

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding quarters for the finite-lived intangible assets. + References No definition available. + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 40 -SubTopic 30 -Topic 350 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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