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Note 11 - Other Assets (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Schedule of Other Assets [Table Text Block] |
|  | December 31, |
|  | 2017 |  |  | 2016 |
Long term spare parts |  | $ | 871 |  |  | $ | 830 |
Long term deposits |  |  | 578 |  |  |  | 964 |
Other |  |  | 129 |  |  |  | 0 |
Total |  | $ | 1,578 |  |  | $ | 1,794 |

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- Definition Tabular disclosure of the carrying amounts of other assets. This disclosure includes other current assets and other noncurrent assets. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration