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Note 11 - Basic and Diluted Earnings per Common Share (Tables) | 3 Months Ended
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Mar. 31, 2015
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended March 31, 2015 |  |  | Three months ended March 31, 2014 |
Numerator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |
Net income for the period |  | $ | 2,833,943 |  |  | $ | 476,839 |
Denominator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |
Basic weighted average number of common shares outstanding |  |  | 11,142,628 |  |  |  | 11,028,559 |
Effect of outstanding stock options |  |  | 437,419 |  |  |  | 611,058 |
Diluted weighted average number of shares outstanding |  |  | 11,580,047 |  |  |  | 11,639,617 |
Basic earnings per common share |  | $ | 0.25 |  |  | $ | 0.04 |
Diluted earnings per common share |  | $ | 0.24 |  |  | $ | 0.04 |

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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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