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Earnings per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Earnings Per Share [Abstract] |
Summary of basic and diluted net income per share |
|  |  |  |  | Year Ended |  |  |  |
|  | December 31, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Basic income per share |  |  |  |  |  |  |  |  |  |  |  |
Net Income for the year - numerator |  | $ | 14,672,663 |  |  | $ | 21,648,664 |  |  | $ | 15,551,536 |
Weighted average common stock outstanding - denominator |  |  | 18,456,781 |  |  |  | 18,349,332 |  |  |  | 17,435,218 |
Net income per share |  | $ | 0.79 |  |  | $ | 1.18 |  |  | $ | 0.89 |
Diluted income per share |  |  |  |  |  |  |  |  |  |  |  |
Net Income for the year - numerator |  | $ | 14,672,663 |  |  | $ | 21,648,664 |  |  | $ | 15,551,536 |
Weighted average common stock outstanding - denominator |  |  | 18,456,781 |  |  |  | 18,349,332 |  |  |  | 17,435,218 |
Effect of dilution |  |  |  |  |  |  |  |  |  |  |  |
Warrant |  |  | - |  |  |  | - |  |  |  | 1,028 |
Weighted average common stock outstanding - denominator |  |  | 18,456,781 |  |  |  | 18,349,332 |  |  |  | 17,436,246 |
Diluted income per share |  | $ | 0.79 |  |  | $ | 1.18 |  |  | $ | 0.89 |

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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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