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CORE DEPOSIT INTANGIBLES | 12 Months Ended
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Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
CORE DEPOSIT INTANGIBLES | CORE DEPOSIT INTANGIBLES Changes in the carrying amount of core deposit intangibles in the accompanying consolidated balance sheets as of December 31 are summarized as follows:
| 2018 |  | 2017
Beginning of year | $ | 2,724 |  |  | $ | 3,308 |
Effect of acquisitions | 2,700 |  |  | — |
Amortization | (718 | ) |  | (584 | )
End of year | $ | 4,706 |  |  | $ | 2,724 |
Accumulated amortization was $3,825 and $3,107 at December 31, 2018 and 2017, respectively. Amortization expense related to core deposit intangibles was $718, $584 and $580 during the years ended December 31, 2018, 2017 and 2016, respectively. The estimated aggregate future amortization expense for core deposit intangibles remaining as of December 31, 2018 was as follows:
Year Ended December 31, | Amount
2019 | $ | 853 |
2020 | 853 |
2021 | 687 |
2022 | 453 |
2023 | 441 |
Thereafter | 1,419 |
| $ | 4,706 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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