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Note 2 - Business Combination (Details Textual) | Dec. 17, 2018 USD ($) $ / shares shares | Oct. 22, 2018 USD ($) | Dec. 31, 2018 USD ($) | Aug. 31, 2018 $ / shares | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
--- | --- | --- | --- | --- | --- | ---
Goodwill, Ending Balance |  |  | $ 202,244 |  |  |
Share Price | $ / shares | $ 16.10 |  |  | $ 17.73 |  |
Assets, Total |  |  | 1,251,878,468 |  | 1,232,755,317 |
Loans and Leases Receivable, Gross, Total |  |  | 782,027,368 |  | 765,283,855 | $ 754,283,563
Deposits, Total |  |  | 1,085,125,458 |  | $ 1,067,985,405 |
LBC Bancshares, Inc [Member] |  |  |  |  |  |
Assets, Total |  |  | 207,000,000 |  |  |
Loans and Leases Receivable, Gross, Total |  |  | 136,000,000 |  |  |
Deposits, Total |  |  | $ 182,000,000 |  |  |
Planters First Bank [Member] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Receivable |  | $ 20,430,271 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposit Liabilities |  | 12,000,000 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total |  | 772,727 |  |  |  |
Business Acquisition, Transaction Costs |  | 113,000 |  |  |  |
Goodwill, Ending Balance |  | 202,244 |  |  |  |
Business Acquisition, Goodwill, Expected Tax Deductible Amount |  | $ 202,000 |  |  |  |
Business Combination, Number of Acquired Receivables |  | 89 |  |  |  |
Business Combination, Acquired Receivable, Fair Value |  | $ 20,430,271 |  |  |  |
Business Combination, Acquired Receivables, Discounted Fair Value Adjustment |  | 319,244 |  |  |  |
Business Combination, Consideration Transferred, Total |  | 10,237,789 |  |  |  |
Planters First Bank [Member] | Land [Member] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total |  | $ 725,000 |  |  |  |
LBC Bancshares, Inc [Member] |  |  |  |  |  |
Business Acquisition, Share Price | $ / shares | $ 23.50 |  |  |  |  |
Business Acquisition, Number of Shares of Acquiring Entity for Each Share of Acquired Entity | shares | 1.3239 |  |  |  |  |
Business Acquistion, Percentage of Shares Receiving Stock Consideration | 55.00% |  |  |  |  |
Business Acquistion, Percentage of Shares Receiving Cash Consideration | 45.00% |  |  |  |  |
Business Acquisition, Minimum Percentage of Merger Consideration Paid in Stock | 50.00% |  |  |  |  |
Business Combination, Consideration Transferred, Total | $ 34,100,000 |  |  |  |  |

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