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Note 5 - Advances for Vessels Under Construction and Acquisitions (Details) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
--- | --- | --- | ---
Note 5 - Advances for Vessels Under Construction and Acquisitions (Details) [Line Items] |  |  |
(in Dollars) | $ 44,031,882 | $ 88,965,085 | $ 70,577,435
LPG Carriers Contracted in 2012 from Seller [Member] |  |  |
Note 5 - Advances for Vessels Under Construction and Acquisitions (Details) [Line Items] |  |  |
Number of Vessels Under Construction |  | 2 |
LPG Carriers Contracted in 2013 from Seller [Member] |  |  |
Note 5 - Advances for Vessels Under Construction and Acquisitions (Details) [Line Items] |  |  |
Number of Vessels Under Construction |  | 3 |
LPG Carriers Contracted in 2013 from Ship-Builder [Member] |  |  |
Note 5 - Advances for Vessels Under Construction and Acquisitions (Details) [Line Items] |  |  |
Number of Vessels Under Construction |  | 4 |
LPG Carriers Contracted in 2014 from Ship-builders [Member] |  |  |
Note 5 - Advances for Vessels Under Construction and Acquisitions (Details) [Line Items] |  |  |
Number of Vessels Under Construction | 6 | 6 |
LPG Carriers Contracted in 2014 from Sellers [Member] |  |  |
Note 5 - Advances for Vessels Under Construction and Acquisitions (Details) [Line Items] |  |  |
Number of Vessels Under Construction |  | 1 |

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