Note 8 - Other Intangible Assets - Analysis of the Core Deposit Intangible Activity (Details) - Core Deposits [Member] - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Acquired Intangible Assets, Gross, Balance | $ 1,056,693 | $ 1,056,693 | $ 1,056,693 |
| Acquired Intangible Assets, Accumulated Amortization | (976,178) | (940,429) | (904,681) |
| Acquired Intangible Assets, Net | 80,515 | 116,264 | 152,012 |
| Amortization Expense | $ (35,749) | $ (35,748) | $ (35,749) |