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Merger (Preliminary Estimated Fair Value of Assets Acquired) (Details) - USD ($) | Jan. 08, 2018 | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Net assets acquired: |  |  |
Goodwill |  | $ 23,107,000 | $ 3,918,000
Scottdale Bank and Trust Company [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Total purchase price | $ 66,973,000 |  |
Net assets acquired: |  |  |
Cash and cash equivalents | 67,817,000 |  |
Investment securities | 114,039,000 |  |
Restricted stock | 97,000 |  |
Loans | 70,769,000 |  |
Core deposit intangible | 4,940,000 |  |
Premises and equipment | 1,496,000 |  |
Foreclosed assets | 11,000 |  |
Deferred income taxes | 1,050,000 |  |
Accrued interest receivable | 989,000 |  |
Other assets | 266,000 |  |
Deposits | (209,981,000) |  |
Accrued interest payable | (16,000) |  |
Other liabilities | (3,693,000) |  |
Total net assets acquired | 47,784,000 |  |
Goodwill | $ 19,189,000 |  |

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