Note 10 - Accrued Expenses and Other Current Liabilities (Details) - Accrued Expenses and Other Current Liabilities - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Accrued Expenses and Other Current Liabilities [Abstract] | ||
| Accrued employee liabilities | $ 1,474 | $ 3,227 |
| Accrued property, use, and franchise taxes | 1,248 | 1,340 |
| Other | 254 | 128 |
| Total | $ 2,976 | $ 4,695 |