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Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2024
Goodwill and Other Intangible Assets |
Summary of gross carrying amounts and accumulated amortization of other intangible assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31, | ​
(Dollars in thousands) |  | 2024 |  | 2023 |
Gross carrying amount | ​ | $ | 275,168 | ​ | $ | 274,753 | ​
Accumulated amortization | ​ |  | (191,975) | ​ |  | (185,977) | ​
​ | ​ | $ | 83,193 | ​ | $ | 88,776 | ​
Schedule of estimated amortization expense for other intangibles for each of the next five quarters | ​
​ | ​ | ​ | ​ | ​
(Dollars in thousands) | ​ | ​ | ​ | ​
Quarter ending: |  | ​ |  |
June 30, 2024 | ​ | $ | 5,744 | ​
September 30, 2024 | ​ |  | 5,327 | ​
December 31, 2024 | ​ |  | 5,326 | ​
March 31, 2025 | ​ |  | 5,100 | ​
June 30, 2025 | ​ | ​ | 4,836 | ​
Thereafter | ​ |  | 50,493 | ​
​ | ​ | $ | 76,826 | ​
​

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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://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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