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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite-Lived Intangible Assets | The following table presents information about our core deposit premium intangible asset at December 31 (in thousands):
|  | 2018 |  | 2017
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
Amortized intangible asset: |  |  |  |  |  |  |  |  |  |  |  |
Core deposit intangible |  | $ | 14,549 |  |  | $ | 1,602 |  |  | $ | 8,589 |  |  | $ | 626 |
Finite-lived Intangible Assets Amortization Expense | The following table presents information about aggregate amortization expense for 2018 and 2017 and for the succeeding fiscal years as follows (in thousands):
|  | 2018 |  | 2017
Aggregate amortization expense of core deposit premium intangible |  | $ | 976 |  |  | $ | 346 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | Estimated aggregate amortization expense of the core deposit premium intangible for the year ending December 31 (in thousands):
2019 | $ | 1,368 |
2020 | 1,351 |
2021 | 1,334 |
2022 | 1,317 |
2023 | 1,301 |
Thereafter | 6,276 |
Total | $ | 12,947 |

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