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Note 10 - Accrued Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2014
Accrued Liabilities [Abstract] |
Schedule of Accrued Liabilities [Table Text Block] |
|  | December 31, |
|  | 2014 |  |  | 2013 |
Salaries, wages, employment taxes and withholdings |  | $ | 2,758 |  |  | $ | 4,696 |
Employee benefit plans |  |  | 1,437 |  |  |  | 1,244 |
Income, property and other taxes |  |  | 2,439 |  |  |  | 532 |
Deferred revenue |  |  | 6,120 |  |  |  | 12,357 |
Other |  |  | 6,021 |  |  |  | 4,977 |
|  | $ | 18,775 |  |  | $ | 23,806 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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