Note 10 - Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Provision at statutory tax rates | $ 2,739 | $ 2,748 | $ 4,674 | ||||||||
| Tax effects of non-taxable income | (481) | (483) | (1,087) | ||||||||
| Non-deductible interest expense | 9 | 11 | 21 | ||||||||
| Bank-owned life insurance | (187) | (192) | (221) | ||||||||
| Change in valuation allowance | (355) | (29,981) | (3,799) | ||||||||
| Regulatory penalties | 570 | ||||||||||
| Other items, net | 22 | 138 | 168 | ||||||||
| Income tax expense (benefit) | $ 136 | $ 724 | $ 661 | $ 226 | $ (27,719) | $ 22 | $ (62) | $ 1,747 | $ (27,759) | $ 326 | |