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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] |
Changes in Carrying Amount of Goodwill | For additional details related to impairment testing, see the “Goodwill and Intangible Assets” section of “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included as Item 7 of this Annual Report on Form 10K.
|  | December 31 2018 |  |  | December 31 2017 |
Balance, January 1 |  | $ | 119,880 |  |  | $ | 76,941 |
Goodwill acquired |  |  | — |  |  |  | 42,939 |
Balance, December 31 |  | $ | 119,880 |  |  | $ | 119,880 |
Amortizable Intangible Assets | Amortizable intangible assets are summarized as follows:
|  | December 31, 2018 |  |  | December 31, 2017 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |
Amortizable intangible assets Core deposit intangible |  | $ | 20,711 |  |  | $ | (10,321 | ) |  | $ | 20,711 |  |  | $ | (8,309 | )
Estimated Amortization | Estimated amortization for the years ending December 31 is as follows:
2019 |  | $ | 1,787 |
2020 |  |  | 1,481 |
2021 |  |  | 1,394 |
2022 |  |  | 1,375 |
2023 |  |  | 1,281 |
Thereafter |  |  | 3,072 |
|  | $ | 10,390 |

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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 the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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