Note 13 - Stock Based Compensation (Details) - Unvested Stock Option Activity - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Unvested Stock Option Activity [Abstract] | |||
| Number of unvested stock options | 90,000 | ||
| Weighted average grant date fair value | $ 2.78 | ||
| Weighted average life remaining | 1 year 335 days | 2 years 335 days | |
| Number of stock options granted | 30,000 | 90,000 | 0 |
| Stock options granted - weighted average grant date fair value | $ 4.55 | $ 2.78 | |
| Number of stock options vested | (60,000) | ||
| Stock options vested - weighted average grant date fair value | $ 3.67 | ||
| Number of unvested stock options | 60,000 | 90,000 | |
| Weighted average grant date fair value | $ 2.78 | $ 2.78 | |