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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2023
Summary of gross carrying amount of intangible assets and the associated accumulated amortization | The gross carrying amount of other intangible assets and the associated accumulated amortization at September 30, 2023 and December 31, 2022, are presented as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2023 | ​ | December 31, 2022
​ | ​ | Gross | ​ | ​ | ​ | ​ | Net | ​ | Gross | ​ | ​ | ​ | ​ | Net
​ | ​ | carrying | ​ | Accumulated | ​ | carrying | ​ | carrying | ​ | Accumulated | ​ | carrying
​ | ​ | amount | ​ | amortization | ​ | amount | ​ | amount | ​ | amortization | ​ | amount
Core deposit intangible |  | $ | 91,566 |  | $ | (48,765) | ​ | $ | 42,801 | ​ | $ | 91,566 |  | $ | (44,775) | ​ | $ | 46,791
Customer relationship intangible | ​ |  | 17,000 | ​ |  | (1,266) | ​ |  | 15,734 | ​ |  | 1,300 | ​ |  | (32) | ​ |  | 1,268
Internally developed technology | ​ | ​ | 2,300 | ​ | ​ | (153) | ​ | ​ | 2,147 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Total | ​ | $ | 110,866 | ​ | $ | (50,184) | ​ | $ | 60,682 | ​ | $ | 92,866 | ​ | $ | (44,807) | ​ | $ | 48,059
Summary of changes in the mortgage servicing rights | Below are the changes in the MSRs for the periods presented: ​
​ | ​ | ​ | ​ | ​ | ​
​ | For the nine months ended September 30,
​ | 2023 | ​ | 2022
Beginning balance | $ | 9,162 |  | $ | 5,957
Originations | ​ | 993 | ​ | ​ | 3,895
Sales |  | (4,664) | ​ |  | —
Recovery (impairment) | ​ | 66 | ​ | ​ | (6)
Amortization |  | (675) | ​ |  | (713)
Ending balance | ​ | 4,882 | ​ | ​ | 9,133
Fair value of mortgage servicing rights | $ | 7,514 | ​ | $ | 13,782
Schedule of changes in the SBA servicing assets | ​
​ | ​ | ​
​ | For the nine months ended September 30,
​ | 2023
Beginning balance | $ | 2,666
Originations | ​ | 325
Disposals |  | (321)
Recovery | ​ | 153
Amortization | ​ | (104)
Ending balance | ​ | 2,719
Fair value of SBA servicing asset | $ | 2,719
Other intangible assets |
Summary of estimated future amortization expense for the next five years | The following table shows the estimated future amortization expense during the next five years for other intangible assets as of September 30, 2023: ​
​ | ​ | ​
Years ending December 31, | ​ | Amount
For the three months ending December 31, 2023 | $ | 1,969
For the year ending December 31, 2024 | ​ | 7,908
For the year ending December 31, 2025 | ​ | 7,786
For the year ending December 31, 2026 | ​ | 7,664
For the year ending December 31, 2027 | ​ | 7,542
MSRs |
Summary of estimated future amortization expense for the next five years | The following table shows the estimated future amortization expense during the next five years for the MSRs as of September 30, 2023: ​
​ | ​ | ​
Years ending December 31, | ​ | Amount
For the three months ending December 31, 2023 | $ | 133
For the year ending December 31, 2024 | ​ | 517
For the year ending December 31, 2025 | ​ | 461
For the year ending December 31, 2026 | ​ | 411
For the year ending December 31, 2027 | ​ | 366

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- Definition Tabular disclosure of finite-lived intangible assets acquired as part of a business combination or through an asset purchase, by major class and in total, including the value of the asset acquired, any significant residual value (the expected value of the asset at the end of its useful life) and the weighted-average amortization period. + 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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