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Goodwill and Other Amortizing Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2018
Goodwill Disclosure [Abstract] |
Summarized Other Intangible Assets | The following table summarizes other intangible assets:
| Gross Intangible Assets |  | Accumulated Amortization |  | Net Intangible Assets
| (dollars in thousands)
December 31, 2018 |  |  |  |  |
Customer deposit intangibles | $ | 20,228 |  |  | $ | (8,877 | ) |  | $ | 11,351 |
Customer list intangible | 2,283 |  |  | (1,069 | ) |  | 1,214 |
Total other intangible assets | $ | 22,511 |  |  | $ | (9,946 | ) |  | $ | 12,565 |
December 31, 2017 |  |  |  |  |
Customer deposit intangibles | $ | 19,471 |  |  | $ | (6,071 | ) |  | $ | 13,400 |
Customer list intangible | 2,283 |  |  | (751 | ) |  | 1,532 |
Total other intangible assets | $ | 21,754 |  |  | $ | (6,822 | ) |  | $ | 14,932 |
Estimated Amortization Expense of Core Deposit Intangibles | The following presents the estimated amortization expense of core deposit and customer list intangibles:
| Core Deposit Intangibles | Customer List Intangible | Total
| (dollars in thousands)
2019 | $ | 2,542 |  | $ | 271 |  | $ | 2,813 |
2020 | 2,177 |  | 230 |  | 2,407 |
2021 | 1,869 |  | 193 |  | 2,062 |
2022 | 1,560 |  | 159 |  | 1,719 |
2023 | 1,252 |  | 127 |  | 1,379 |
Thereafter | 1,951 |  | 234 |  | 2,185 |
Total | $ | 11,351 |  | $ | 1,214 |  | $ | 12,565 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + 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 Reference 2: 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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