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Note O - Stock Options (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |  |
|  | Number of Options |  |  | Weighted average exercise |  |  | Weighted average remaining life |  |  | Aggregate intrinsic |
|  | 1999 Plan |  |  | 2004 Plan |  |  | Non Plan |  |  | Total |  |  | price |  |  | (in years) |  |  | value |
Outstanding, as of December 31, 2010 |  | 500,000 |  |  | 2,580,689 |  |  | 1,329,841 |  |  | 4,410,530 |  |  | $ | 0.25 |  |  |  |  |  |  |
Granted |  | — |  |  | 845,000 |  |  | — |  |  | 845,000 |  |  | 0.14 |  |  |  |  |  |  |
Exercised |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |
Forfeited |  | — |  |  | (210,000 | ) |  | — |  |  | (210,000 | ) |  | 0.14 |  |  |  |  |  |  |
Expired |  | — |  |  | (383,853 | ) |  | (257,265 | ) |  | (641,118 | ) |  | 0.36 |  |  |  |  |  |  |
Outstanding, as of December 31, 2011 |  | 500,000 |  |  | 2,831,836 |  |  | 1,072,576 |  |  | 4,404,412 |  |  | $ | 0.22 |  |  |  |  |  |  |
Granted |  | — |  |  | 600,000 |  |  | — |  |  | 600,000 |  |  | 0.09 |  |  |  |  |  |  |
Exercised |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |
Forfeited |  | — |  |  | (164,623 | ) |  | (365,378 | ) |  | (530,001 | ) |  | 0.09 |  |  |  |  |  |  |
Expired |  | — |  |  | (504,941 | ) |  | (707,198 | ) |  | (1,212,139 | ) |  | 0.30 |  |  |  |  |  |  |
Outstanding, as of December 31, 2012 |  | 500,000 |  |  | 2,762,272 |  |  | — |  |  | 3,262,272 |  |  | 0.16 |  |  | 4.21 |  |  | $ | 2,325 |
Vested or expected to vest at December 31, 2012 |  |  |  |  |  |  |  |  |  |  | 2,972,404 |  |  | 0.16 |  |  | 4.04 |  |  | $ | 2,325 |
Exercisable at December 31, 2012 |  |  |  |  |  |  |  |  |  |  | 2,230,594 |  |  | 0.18 |  |  | 3.43 |  |  | $ | 2,325 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] |  |
|  | Options Outstanding |  | Options Exercisable |
Range of exercise prices |  | Number of shares |  | Weighted average exercise price |  | Weighted average remaining life (in years) |  | Number exercisable |  | Weighted average exercise price |
| $ 0.08 | - | 0.21 |  | 2,852,272 |  | $ | 0.11 |  | 4.23 |  | 1,820,594 |  | $ | 0.12 |
| 0.22 | - | 0.40 |  | 70,000 |  | 0.40 |  | 4.02 |  | 70,000 |  | 0.40 |
| 0.41 | - | 0.68 |  | 340,000 |  | 0.46 |  | 4.02 |  | 340,000 |  | 0.46 |
| $ 0.07 | - | 0.68 |  | 3,262,272 |  |  |  |  |  | 2,230,594 |  |  |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Three Months Ended September 30, |
|  | 2013 |  |  | 2012 |
Selling, general and administrative |  | $ | 19,294 |  |  | $ | 5,637 |
Research, development and engineering |  |  | 2,961 |  |  |  | 1,308 |
|  | $ | 22,255 |  |  | $ | 6,945 |
|  | Nine Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2013 |  |  | 2012 |
Selling, general and administrative |  | $ | 50,571 |  |  | $ | 19,022 |
Research, development and engineering |  |  | 11,701 |  |  |  | 26,032 |
|  | $ | 62,272 |  |  | $ | 45,054 |
|  | Year ended December 31, |
|  | 2012 |  |  | 2011 |
Selling, general and administrative |  | $ | 22,502 |  |  | $ | 12,054 |
Research, development and engineering |  |  | 27,340 |  |  |  | 45,126 |
|  | $ | 49,842 |  |  | $ | 57,180 |

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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