Note 9 - Income Taxes - Difference Between Financial Statement Tax Expense and Amount Computer by Applying Statutory Federal Tax Rate to Income Before Income Taxes (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Statutory Federal Income Taxes | $ 4,283,394 | $ 4,134,570 | $ 3,671,971 |
| Tax-Exempt Interest | (109,759) | (83,903) | (74,138) |
| Premiums on Officers’ Life Insurance | (182,532) | (232,988) | (186,712) |
| Meal and Entertainment Disallowance | 16,813 | 21,600 | 14,044 |
| Other | (156,583) | (51,476) | (156,878) |
| Actual Federal Income Taxes | $ 3,851,333 | $ 3,787,803 | $ 3,268,287 |