Note 13 - Stock Based Compensation (Details) - Unvested Restricted Stock Activity - Restricted Stock [Member] - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Note 13 - Stock Based Compensation (Details) - Unvested Restricted Stock Activity [Line Items] | |||
| Number of unvested restricted stock | 350,000 | ||
| Weighted average grant date fair value - unvested | $ 16.87 | ||
| Weighted average life remaining - unvested | 1 year 313 days | 2 years 266 days | |
| Number of restricted stock granted | 375,000 | ||
| Weighted average grant date fair value - granted | $ 16.88 | ||
| Number of restricted stock vested | 108,333 | 25,000 | |
| Weighted average grant date fair value - vested | $ 16.85 | $ 17.09 | |
| Number of unvested restricted stock | 241,667 | 350,000 | |
| Weighted average grant date fair value - unvested | $ 16.88 | $ 16.87 | |