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Note 9 - Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
|  | Core Deposit Intangible |  |  | Accumulated Amortization |  |  | Net Core Deposit Intangible |
Core Deposit Intangible |  |  |  |  |  |  |  |  |  |  |  |
Balance, December 31, 2016 |  | $ | 1,056,693 |  |  | $ | (976,178 | ) |  | $ | 80,515 |
Amortization Expense |  |  | - |  |  |  | (35,749 | ) |  |  | (35,749 | )
Balance, December 31, 2017 |  | $ | 1,056,693 |  |  | $ | (1,011,927 | ) |  | $ | 44,766 |
Addition |  |  | 560,000 |  |  |  | - |  |  |  | 560,000 |
Amortization Expense |  |  | - |  |  |  | (48,193 | ) |  |  | (48,193 | )
Balance, December 31, 201 8 |  | $ | 1,616,693 |  |  | $ | (1,060,120 | ) |  | $ | 556,573 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Year Ending December 31 |  | Amount |
2019 |  | $ | 83,684 |
2020 |  |  | 74,667 |
2021 |  |  | 74,667 |
2022 |  |  | 74,667 |
2023 |  |  | 74,667 |
Thereafter |  |  | 174,221 |
|  | $ | 556,573 |

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