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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] |
Intangible Assets Subject to Amortization | Intangible assets subject to amortization at December 31, 2018 and 2017 are as follows:
|  | 2018 |  | 2017
|  | Gross |  | Accumulated |  | Gross |  | Accumulated
(Dollar amounts in thousands) |  | Amount |  | Amortization |  | Amount |  | Amortization
Core deposit intangible |  | $ | 10,836 |  |  | $ | 9,639 |  |  | $ | 10,836 |  |  | $ | 9,206 |
|  | $ | 10,836 |  |  | $ | 9,639 |  |  | $ | 10,836 |  |  | $ | 9,206 |
Estimated Amortization Expense | Estimated amortization expense for the next five years is as follows:
| In thousands |
2019 | $ | 350 |
2020 | 252 |
2021 | 232 |
2022 | 224 |
2023 | 139 |

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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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