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Note 12 - Debt (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2015
Debt Disclosure [Abstract] |
Schedule of Debt [Table Text Block] |
|  | June 30, 2015
|  | Carrying Value |  | Fair Value
Equipment-based revolving loan |  | $ | 14,550 |  |  | $ | - |
Equipment-based term loan |  |  | 20,000 |  |  |  | 20,000 |
Total Equipment-based Facility debt |  | $ | 34,550 |  |  | $ | 20,000 |

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

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration