Note 12 - Federal Income Taxes - Effective Tax Rate (Details) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Statutory rate | 34.00% | 34.00% | 34.00% |
| Municipal interest income | (2.00%) | (2.10%) | (3.90%) |
| Other, net | (1.90%) | (2.50%) | (4.10%) |
| Valuation allowance | |||
| Effective tax rate | 30.10% | 29.40% | 26.00% |