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Note 9 - Basic and Diluted Earnings Per Common Share (Tables) | 3 Months Ended
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Mar. 31, 2018
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended March 31, |
|  | 2018 |  |  | 2017 |
Numerator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |
Net income for the period |  | $ | 3,743,692 |  |  | $ | 2,446,491 |
Denominator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |
Basic weighted average number of common shares outstanding |  |  | 10,588,718 |  |  |  | 10,474,647 |
Effect of outstanding stock options |  |  | 203,895 |  |  |  | 301,868 |
Diluted weighted average number of shares outstanding |  |  | 10,792,613 |  |  |  | 10,776,515 |
Basic earnings per common share |  | $ | 0.35 |  |  | $ | 0.23 |
Diluted earnings per common share |  | $ | 0.35 |  |  | $ | 0.23 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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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- References No definition available. + Details
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