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Note 8 - Basic And Diluted Earnings Per Common Share: | 3 Months Ended
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Mar. 31, 2013
Earnings Per Share [Text Block] | 8. BASIC AND DILUTED EARNINGS PER COMMON SHARE: Basic earnings per common share has been calculated by dividing net income for the period by the weighted average number of common shares outstanding during each period. Diluted earnings per share has been calculated by dividing net income for the period by the weighted average number of common shares and potentially dilutive common shares outstanding during the period. In computing diluted earnings per share, the treasury stock method is used to determine the number of shares assumed to be purchased from the conversion of common shares equivalents or the proceeds of option exercises. The following table is a summary of the basic and diluted earnings per common share:
|  | Three months ended March 31, 2013 |  |  | Three months ended March 31, 2012 |
Numerator for basic and diluted earnings per common share: |  |  |  |  |  |
Net income (loss) for the period |  | $ | 76,579 |  |  | $ | 1,663,619 |
Denominator for basic and diluted earnings per common share: |  |  |  |  |  |  |  |
Basic weighted average number of common shares outstanding |  |  | 40,331,438 |  |  |  | 46,221,465 |
Effect of outstanding stock options |  |  | 3,979,885 |  |  |  | 2,732,986 |
Diluted weighted average number of shares outstanding |  |  | 44,311,323 |  |  |  | 48,954,451 |
Basic earnings (loss) per common share |  | $ | 0.00 |  |  | $ | 0.04 |
Diluted earnings (loss) per common share |  | $ | 0.00 |  |  | $ | 0.03 |
For the three months ended March 31, 2013, outstanding options to purchase 633,000 common shares were not included in the computation of diluted income per common share because all such options had exercise prices greater than the average market price of the common shares. During the three months ended March 31, 2013, 4,114,121 common shares were repurchased and cancelled under the terms of a modified Dutch auction tender offer announced in December 2012. During the three months ended March 31, 2013, 143,073 common shares were repurchased and cancelled under the terms of our stock repurchase program announced in March 2013. During the three months ended March 31, 2012, 7,570,236 common shares were repurchased and cancelled under the terms of a modified Dutch auction tender offer announced in December 2011. The computation of earnings per share and diluted earnings per share for the three months ended March 31, 2013 and 2012 include reductions in the number of shares outstanding due to these repurchases.

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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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