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Note 5 - Advances for Vessels Under Construction and Acquisitions (Tables) | 12 Months Ended
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Dec. 31, 2012
Balance, December 31, 2010 |  |  | 37,273,199 |
Advances for vessels under construction and acquisitions |  |  | 52,797,646 |
Capitalized interest |  |  | 557,565 |
Capitalized expenses |  |  | 1,625,979 |
Vessels delivered |  |  | (69,906,578 | )
Balance, December 31, 2011 |  |  | 22,347,811 |
Advances for vessels under construction and acquisitions |  |  | 61,632,129 |
Capitalized interest |  |  | 281,484 |
Capitalized expenses |  |  | 721,220 |
Vessels delivered |  |  | (65,661,599 | )
Balance, December 31, 2012 |  |  | 19,321,045 |

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