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Note 13 - Earnings / (Loss) Per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | 2010 |  |  | 2011 |  |  | 2012 |
Income: |  |  |  |  |  |  |  |  |
Net income/(loss) |  |  | (6,605,850 | ) |  |  | 1,115,989 |  |  |  | (13,198,741 | )
Basic earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares – Outstanding |  |  | 31,636,633 |  |  |  | 31,794,381 |  |  |  | 38,950,100 |
Basic earnings/(loss) per share |  |  | (0.21 | ) |  |  | 0.04 |  |  |  | (0.34 | )
Effect of dilutive securities |  |  |  |  |  |  |  |  |  |  |  |
Non-vested incentive stock awards |  |  | - |  |  |  | 51,699 |  |  |  | - |
Weighted average common shares – Outstanding |  |  | 31,636,633 |  |  |  | 31,846,080 |  |  |  | 38,950,100 |
Diluted earnings /(loss) per share |  |  | (0.21 | ) |  |  | 0.04 |  |  |  | (0.34 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration