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Acquisitions and Preliminary Purchase Price Allocation Acquisitions and Preliminary Purchase Price Allocation Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Mar. 31, 2019 | Dec. 07, 2018
Business Acquisition [Line Items] |  |  |
Goodwill | $ 109,567 | $ 108,977 |
Poage and Farmers |  |  |
Business Acquisition [Line Items] |  |  |
Consideration | 108,836 |  |
Cash and cash equivalents |  |  | $ 38,498
Investment securities |  |  | 118,556
Loans |  |  | 362,875
Bank owned life insurance |  |  | 7,439
Premises and equipment |  |  | 5,315
Deferred tax assets |  |  | 2,191
Other assets |  |  | 11,101
Total identifiable assets |  |  | 545,975
Deposits |  |  | 471,526
Short-term borrowings |  |  | 2,025
Long-term debt |  |  | 4,053
Other liabilities |  |  | 3,705
Total identifiable liabilities |  |  | 481,309
Net identifiable assets |  |  | 64,666
Goodwill |  |  | 32,782
Core deposit intangible |  |  | 11,388
Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  | 108,836
Farmers Deposit Bancorp, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Consideration | 24,900 |  |
Cash and cash equivalents |  |  | 4,173
Investment securities |  |  | 46,235
Loans |  |  | 58,516
Bank owned life insurance |  |  | 0
Premises and equipment |  |  | 768
Deferred tax liabilities |  |  | 188
Other assets |  |  | 2,302
Total identifiable assets |  |  | 111,806
Deposits |  |  | 92,241
Short-term borrowings |  |  | 2,025
Long-term debt |  |  | 0
Other liabilities |  |  | 651
Total identifiable liabilities |  |  | 94,917
Net identifiable assets |  |  | 16,889
Goodwill |  | 4,700 | 4,677
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 |  |  | 2,379
Other assets |  |  | 8,799
Total identifiable assets |  |  | 434,169
Deposits |  |  | 379,285
Short-term borrowings |  |  | 0
Long-term debt |  |  | 4,053
Other liabilities |  |  | 3,054
Total identifiable liabilities |  |  | 386,392
Net identifiable assets |  |  | 47,777
Goodwill |  | $ 28,100 | 28,105
Core deposit intangible |  |  | 8,054
Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  | $ 83,936

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