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Acquisitions and Preliminary Purchase Price Allocation Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Sep. 30, 2019 | Dec. 07, 2018
Business Acquisition [Line Items] |  |  |
Goodwill | $ 109,567 | $ 109,048 |
Farmers Deposit Bancorp, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Consideration | 24,900 |  |
Cash and cash equivalents |  |  | $ 4,173
Investment securities |  |  | 46,235
Loans |  |  | 58,485
Bank owned life insurance |  |  | 0
Premises and equipment |  |  | 568
Deferred tax assets |  |  | 137
Other assets |  |  | 2,302
Total identifiable assets |  |  | 111,900
Deposits |  |  | 92,241
Short-term borrowings |  |  | 2,025
Long-term debt |  |  | 0
Other liabilities |  |  | 651
Total identifiable liabilities |  |  | 94,917
Net identifiable assets |  |  | 16,983
Goodwill |  |  | 4,583
Core deposit intangible |  |  | 3,334
Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  | 24,900
Poage Bankshares, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Consideration | 83,936 |  |
Cash and cash equivalents |  |  | 34,325
Investment securities |  |  | 72,321
Loans |  |  | 304,359
Bank owned life insurance |  |  | 7,439
Premises and equipment |  |  | 4,547
Deferred tax assets |  |  | 2,222
Other assets |  |  | 8,770
Total identifiable assets |  |  | 433,983
Deposits |  |  | 379,285
Short-term borrowings |  |  | 0
Long-term debt |  |  | 4,053
Other liabilities |  |  | 3,032
Total identifiable liabilities |  |  | 386,370
Net identifiable assets |  |  | 47,613
Goodwill |  |  | 28,269
Core deposit intangible |  |  | 8,054
Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  | 83,936
Poage and Farmers |  |  |
Business Acquisition [Line Items] |  |  |
Consideration | $ 108,836 |  |
Cash and cash equivalents |  |  | 38,498
Investment securities |  |  | 118,556
Loans |  |  | 362,844
Bank owned life insurance |  |  | 7,439
Premises and equipment |  |  | 5,115
Deferred tax assets |  |  | 2,359
Other assets |  |  | 11,072
Total identifiable assets |  |  | 545,883
Deposits |  |  | 471,526
Short-term borrowings |  |  | 2,025
Long-term debt |  |  | 4,053
Other liabilities |  |  | 3,683
Total identifiable liabilities |  |  | 481,287
Net identifiable assets |  |  | 64,596
Goodwill |  |  | 32,852
Core deposit intangible |  |  | 11,388
Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  | $ 108,836

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