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Note 12 - Earnings Per Common 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, 2012 |  |  | Year ended December 31, 2011 |  |  | Year ended December 31, 2010 |
Numerator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |  |
Net income for the year |  | $ | 4,424,142 |  |  | $ | 6,170,231 |  |  | $ | 2,116,948 |
Denominator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted average number of common shares outstanding |  |  | 45,832,862 |  |  |  | 53,454,675 |  |  |  | 57,982,248 |
Effect of stock options |  |  | 3,302,082 |  |  |  | 2,294,758 |  |  |  | 1,973,540 |
Diluted weighted average number of shares outstanding |  |  | 49,134,944 |  |  |  | 55,749,433 |  |  |  | 59,955,788 |
Basic earnings per common share |  | $ | 0.10 |  |  | $ | 0.12 |  |  | $ | 0.04 |
Diluted earnings per common share |  | $ | 0.09 |  |  | $ | 0.11 |  |  | $ | 0.04 |

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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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