Note 18 - Goodwill and Intangible Assets - Core Deposit Intangible Assets (Details) - USD ($) |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|---|
| Less: accumulated amortization | $ (756,000) | $ (508,000) | $ (19,000) |
| Total amortization expense | 2,032,000 | 2,788,000 | |
| Core Deposits [Member] | |||
| Gross carrying amount | 3,315,000 | 3,315,000 | |
| Less: accumulated amortization | (1,283,000) | (527,000) | |
| Total amortization expense | $ 2,032,000 | $ 2,788,000 |