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Note 14 - Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block] |
|  | Year Ended December 31, |
|  | 2010 |  |  | 2011 |  |  | 2012 |
Numerator |  |  |  |  |  |  |  |  |
Net income |  |  | 11,093,191 |  |  |  | 8,549,791 |  |  |  | 28,958,487 |
Less: Dividends declared and undistributed earnings allocated to non-vested shares |  |  | (16,469 | ) |  |  | — |  |  |  | (11,220 | )
Net income attributable to common shareholders, basic |  |  | 11,076,722 |  |  |  | 8,549,791 |  |  |  | 28,947,267 |
Denominator |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding, basic and diluted |  |  | 21,539,331 |  |  |  | 20,909,154 |  |  |  | 20,552,568 |
Earnings per share, basic and diluted |  |  | 0.51 |  |  |  | 0.41 |  |  |  | 1.41 |

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- Definition Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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