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Goodwill and Other Intangible Assets | 3 Months Ended
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Mar. 31, 2024
Goodwill and Other Intangible Assets |
Goodwill and Other Intangible Assets | NOTE 5 Goodwill and Other Intangible Assets The following table summarizes the carrying amount of goodwill, by segment, as of March 31, 2024 and December 31, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
(dollars in thousands) |  | 2024 |  | 2023
Banking | ​ | $ | 35,260 | ​ | $ | 35,260
Retirement and benefit services | ​ | ​ | 11,523 | ​ | ​ | 11,523
Total goodwill | ​ | $ | 46,783 | ​ | $ | 46,783
​ Goodwill is evaluated for impairment on an annual basis, at a minimum, and more frequently when the economic environment warrants. The Company determined that there was no goodwill impairment as of March 31, 2024. The gross carrying amount and accumulated amortization for each type of identifiable intangible asset, as of March 31, 2024 and December 31, 2023, were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2024 | ​ | December 31, 2023
(dollars in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Total |  | Gross Carrying Amount |  | Accumulated Amortization |  | Total
Identifiable customer intangibles | ​ | $ | 41,423 | ​ | $ | (30,967) | ​ | $ | 10,456 | ​ | $ | 41,423 | ​ | $ | (29,959) | ​ | $ | 11,464
Core deposit intangible assets | ​ | ​ | 7,592 | ​ | ​ | (2,214) | ​ | ​ | 5,378 | ​ | ​ | 7,592 | ​ | ​ | (1,898) | ​ | ​ | 5,694
Total intangible assets | ​ | $ | 49,015 | ​ | $ | (33,181) | ​ | $ | 15,834 | ​ | $ | 49,015 | ​ | $ | (31,857) | ​ | $ | 17,158
​ Amortization of intangible assets was $1.3 million for both the three months ended March 31, 2024 and 2023.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//350/tableOfContent + Details
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