Note 19 - Fair Value of Financial Instruments and Fair Value Measurements - Fair Value Measurement Using Significant Unobservable Inputs (Details) - Available-for-sale Securities [Member] - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Balance, available for sale securities | $ 930,311 | $ 948,390 | $ 941,265 |
| Transfers into Level 3 | |||
| Transfers out of Level 3 | |||
| Securities Purchased During the Year | |||
| Securities Matured During the Year | (330,000) | ||
| Loss on OTTI Impairment Included in Noninterest Income | |||
| Unrealized Gains(Losses) Included in Other Comprehensive Income | (23,927) | (18,079) | 7,125 |
| Balance, available for sale securities | $ 576,384 | $ 930,311 | $ 948,390 |