Note 4 - Loans and Allowance for Loan Losses - Troubled Debt Restructurings (Details) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015
USD ($)
|
|
| Number of loans | 0 | 3 |
| Pre-modification outstanding recorded investment | $ 533 | |
| Post-modification outstanding recorded investment | $ 533 | |
| Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | ||
| Number of loans | 2 | |
| Pre-modification outstanding recorded investment | $ 388 | |
| Post-modification outstanding recorded investment | $ 388 | |
| Consumer Portfolio Segment [Member] | Consumer Secured [Member] | ||
| Number of loans | 1 | |
| Pre-modification outstanding recorded investment | $ 145 | |
| Post-modification outstanding recorded investment | $ 145 | |