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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of gross carrying amount of core deposit intangible assets and accumulated amortization | The following table presents the gross carrying amount of core deposit intangible assets and accumulated amortization as of September 30, 2021 and December 31, 2020:
($ in thousands) |  | September 30, 2021 |  | December 31, 2020
Gross balance (1) |  | $ | 86,099 |  |  | $ | 86,099 |
Accumulated amortization (1) |  | (81,869) |  |  | (79,722) |
Net carrying balance (1) |  | $ | 4,230 |  |  | $ | 6,377 |
(1)Excludes fully amortized core deposit intangible assets.
Schedule of estimated future amortization expense of core deposit intangibles | The following table presents the estimated future amortization expense of core deposit intangibles as of September 30, 2021:
($ in thousands) |  | Amount
Remainder of 2021 |  | $ | 602 |
2022 |  | 1,865 |
2023 |  | 1,199 |
2024 |  | 553 |
2025 |  | 11 |
Total |  | $ | 4,230 |

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