Note 3 - Investment Securities (Details) - Amortized Cost and Fair Value of Debt Securities by Contractual Maturity - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Amortized Cost and Fair Value of Debt Securities by Contractual Maturity [Abstract] | ||
| Due in one year or less | $ 1,070 | |
| Due in one year or less | 1,074 | |
| Due in one year or less | 0 | |
| Due in one year or less | 0 | |
| Due after one year through five years | 17,306 | |
| Due after one year through five years | 17,354 | |
| Due after one year through five years | 0 | |
| Due after one year through five years | 0 | |
| Due after five years through ten years | 19,267 | |
| Due after five years through ten years | 19,604 | |
| Due after ten years | 12,745 | |
| Due after ten years | 13,052 | |
| Due after ten years | 0 | |
| Due after ten years | 0 | |
| 50,388 | ||
| 51,084 | ||
| 0 | ||
| 0 | ||
| Mortgage-backed securities and CMO | 45,865 | |
| Mortgage-backed securities and CMO | 45,800 | |
| Mortgage-backed securities and CMO | 5 | |
| Mortgage-backed securities and CMO | 5 | |
| 96,253 | ||
| 96,884 | ||
| 5 | $ 6 | |
| $ 5 | $ 6 |