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Note 6 - Vessels, Net (Details Textual) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Nov. 25, 2016 | Nov. 20, 2015 | Mar. 12, 2015
Impairment of Long-Lived Assets Held-for-use | $ 5,735,086 | $ 8,238,987 | $ 6,168,747 |  |  |
Gain (Loss) on Disposition of Property Plant Equipment | 118,427 | 33,251 |  |  |  |
Gas Kaizen and Gas Crystal Vessels [Member] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  |  | $ 2,054,156
Gas Arctic [Member] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  | $ 950,000 |
Gas Ice Vessel [Member] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  | $ 420,500 |  |
Impairment Loss [Member] |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  | 6,775,416 | $ 6,168,747 |  |  |
Impairment of Long-Lived Assets Held-for-use | 5,735,086 | $ 1,463,571 |  |  |  |
Net Gain on Sale of Vessels [Member] | Gas Arctic and Gas Ice Vessels [Member] |  |  |  |  |  |
Gain (Loss) on Disposition of Property Plant Equipment | $ 118,427 |  |  |  |  |

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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