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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2021
Goodwill and Other Intangible Assets |
Schedule of goodwill by segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
(dollars in thousands) |  | 2021 |  | 2020
Banking | ​ | $ | 20,131 | ​ | $ | 20,131
Retirement and benefit services | ​ | ​ | 10,070 | ​ | ​ | 10,070
Total goodwill | ​ | $ | 30,201 | ​ | $ | 30,201
Schedule of identifiable intangible assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021 | ​ | December 31, 2020
(dollars in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Total |  | Gross Carrying Amount |  | Accumulated Amortization |  | Total
Identifiable customer intangibles | ​ | $ | 43,346 | ​ | $ | (20,753) | ​ | $ | 22,593 | ​ | $ | 43,346 | ​ | $ | (17,490) | ​ | $ | 25,856
Core deposit intangible assets | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,793 | ​ | ​ | (3,730) | ​ | ​ | 63
Total intangible assets | ​ | $ | 43,346 | ​ | $ | (20,753) | ​ | $ | 22,593 | ​ | $ | 47,139 | ​ | $ | (21,220) | ​ | $ | 25,919

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 + Details
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