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Note 8 - Basic And Diluted Earnings Per Common Share: (Tables) | 9 Months Ended
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Sep. 30, 2013
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended September 30, 2013 |  |  | Three months ended September 30, 2012 |  |  | Nine months ended September 30, 2013 |  |  | Nine months ended September 30, 2012 |
Numerator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income for the period |  | $ | 2,593,360 |  |  | $ | 1,635,000 |  |  | $ | 3,257,569 |  |  | $ | 3,994,617 |
Denominator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted average number of common shares outstanding |  |  | 43,183,583 |  |  |  | 45,094,678 |  |  |  | 41,289,876 |  |  |  | 46,362,261 |
Effect of outstanding stock options |  |  | 2,456,317 |  |  |  | 3,316,751 |  |  |  | 3,459,356 |  |  |  | 3,241,609 |
Diluted weighted average number of shares outstanding |  |  | 45,639,900 |  |  |  | 48,411,429 |  |  |  | 44,749,232 |  |  |  | 49,603,870 |
Basic earnings per common share |  | $ | 0.06 |  |  | $ | 0.04 |  |  | $ | 0.08 |  |  | $ | 0.09 |
Diluted earnings per common share |  | $ | 0.06 |  |  | $ | 0.03 |  |  | $ | 0.07 |  |  | $ | 0.08 |

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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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