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Note 12 - Earnings Per Common Share | 12 Months Ended
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Dec. 31, 2012
Earnings Per Share [Text Block] | 12. Earnings per common share: The following table reconciles the numerators and denominators of the basic and diluted earnings per common share computation:
|  | 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 |
Options to purchase 755,187 common shares were outstanding during 2012 (2011: 3,148,750; 2010: 2,937,000) but were not included in the computation of diluted income per common share because the options’ exercise price was greater than the average market price of the common shares. The options which expire in years 2013 to 2018 were still outstanding at the end of 2012.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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