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v3.26.1

Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2026
Goodwill and Other Intangible Assets |
Summary of gross carrying amounts and accumulated amortization of other intangible assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31, | ​
(Dollars in thousands) | ​ ​ ​ | 2026 | ​ ​ ​ | 2025 | ​ ​ ​
Gross carrying amount | ​ | $ | 689,084 | ​ | $ | 689,419 | ​
Accumulated amortization | ​ |  | (324,398) | ​ |  | (303,093) | ​
​ | ​ | $ | 364,686 | ​ | $ | 386,326 | ​
Schedule of estimated amortization expense for other intangibles for each of the next five quarters and thereafter | ​
​ | ​ | ​ | ​ | ​
(Dollars in thousands) | ​ | ​ | ​ | ​
Quarter ending: | ​ ​ ​ | ​ | ​ ​ ​ |
June 30, 2026 | ​ | $ | 21,041 | ​
September 30, 2026 | ​ |  | 20,628 | ​
December 31, 2026 | ​ |  | 20,628 | ​
March 31, 2027 | ​ |  | 18,517 | ​
June 30, 2027 | ​ | ​ | 18,188 | ​
Thereafter | ​ |  | 260,508 | ​
​ | ​ | $ | 359,510 | ​
​

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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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