Note 14 - Vertical Long-term Incentive Plan (Details Textual) - Vertical Long-Term Incentive Plan [Member] - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Percentage of Award Pay Out in Year Two | 60.00% | ||
| Percentage of Award Pay Out in Year Three | 25.00% | ||
| Percentage of Award Pay Out in Year Four | 15.00% | ||
| Service Expense [Member] | |||
| Vertical LTI Expense | $ 1,513 | $ 328 | |
| Maximum [Member] | |||
| Percentage of Award Allowed to be Paid in Unrestricted Stock | 50.00% | ||