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Note 8 - Basic And Diluted Earnings Per Common Share: (Tables) | 6 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended June 30, 2013 |  |  | Three months ended June 30, 2012 |  |  | Six months ended June 30, 2013 |  |  | Six months ended June 30, 2012 |
Numerator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income for the period |  | $ | 587,630 |  |  | $ | 695,998 |  |  | $ | 664,209 |  |  | $ | 2,359,617 |
Denominator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted average number of common shares outstanding |  |  | 40,323,261 |  |  |  | 45,912,458 |  |  |  | 40,327,324 |  |  |  | 47,003,016 |
Effect of outstanding stock options |  |  | 3,955,591 |  |  |  | 3,536,972 |  |  |  | 3,966,691 |  |  |  | 3,200,147 |
Diluted weighted average number of shares outstanding |  |  | 44,278,852 |  |  |  | 49,449,430 |  |  |  | 44,294,015 |  |  |  | 50,203,163 |
Basic earnings per common share |  | $ | 0.01 |  |  | $ | 0.02 |  |  | $ | 0.02 |  |  | $ | 0.05 |
Diluted earnings per common share |  | $ | 0.01 |  |  | $ | 0.01 |  |  | $ | 0.01 |  |  | $ | 0.05 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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