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Note 2 - Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] |
|  | Years Ended December 31,
|  | 2016 |  | 2015 |  | 2014
Interest |  | $ | 66 |  |  | $ | 86 |  |  | $ | 103 |
Income taxes, net of refunds |  | $ | 3,562 |  |  | $ | 1,459 |  |  | $ | 3,259 |

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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