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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Other Intangible Assets |
Schedule of goodwill by segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
(dollars in thousands) |  | 2023 |  | 2022
Banking | ​ | $ | 35,260 | ​ | $ | 35,260
Retirement and benefit services | ​ | ​ | 11,523 | ​ | ​ | 11,827
Total goodwill | ​ | $ | 46,783 | ​ | $ | 47,087
Schedule of identifiable intangible assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023 | ​ | December 31, 2022
(dollars in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Total |  | Gross Carrying Amount |  | Accumulated Amortization |  | Total
Identifiable customer intangibles | ​ | $ | 41,423 | ​ | $ | (29,959) | ​ | $ | 11,464 | ​ | $ | 41,423 | ​ | $ | (25,927) | ​ | $ | 15,496
Core deposit intangible assets | ​ | ​ | 7,592 | ​ | ​ | (1,898) | ​ | ​ | 5,694 | ​ | ​ | 7,592 | ​ | ​ | (633) | ​ | ​ | 6,959
Total intangible assets | ​ | $ | 49,015 | ​ | $ | (31,857) | ​ | $ | 17,158 | ​ | $ | 49,015 | ​ | $ | (26,560) | ​ | $ | 22,455
Schedule of amortization expense | ​
​ | ​ | ​ | ​
(dollars in thousands) |  | Amount
2024 | ​ | $ | 5,043
2025 | ​ | ​ | 3,904
2026 | ​ | ​ | 2,275
2027 | ​ | ​ | 2,275
2028 | ​ | ​ | 1,642
Thereafter | ​ | ​ | 2,019
Total | ​ | $ | 17,158
​

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + 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 + Details
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