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Note A - The Company and Summary of Significant Accounting Policies (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012
Disclosure Text Block [Abstract] |  |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |  |
|  | December 31, |
|  | 2012 |  |  | 2011 |
Accounts receivable |  | $ | 625,310 |  |  | $ | 984,872 |
Allowance for doubtful accounts |  |  | (20,526 | ) |  |  | (397,526 | )
Accounts receivable, net allowances for doubtful accounts |  |  | 604,784 |  |  |  | 587,346 |
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] |  |
|  | Balance at Beginning of Year |  |  | Charged to Costs and Expenses |  |  | Deductions From Reserves |  |  | Balance at End of Year |
Year Ended December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts |  | $ | 397,526 |  |  | $ | - |  |  | $ | 377,000 |  |  | $ | 20,526 |
Year Ended December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts |  | $ | 11,526 |  |  | $ | 386,000 |  |  | $ | - |  |  | $ | 397,526 |
Property, Plant and Equipment, Estimated Useful Lives |  |
Equipment and leasehold improvements |  |  |
Equipment (years) |  | 3 | - | 5 |
Furniture and fixtures (years) |  | 3 | - | 5 |
Software (years) |  |  | 3 |  |
Leasehold improvements |  | life or lease term |
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 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |  |
|  | Year ended December 31, |
|  | 2012 |  |  | 2011 |
Risk free interest rate |  |  | 0.80 | % |  |  | 1.64 | %
Expected life of options (in years) |  |  | 4.48 |  |  |  | 4.52 |
Expected dividends |  |  | 0 | % |  |  | 0 | %
Volatility of stock price |  |  | 114 | % |  |  | 114 | %

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3, 4 -Article 5 + Details
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