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Note A - The Company and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2015
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | December 31, |
|  | 2015 |  |  | 2014 |
Accounts receivable |  | $ | 3,405,190 |  |  | $ | 645,867 |
Allowance for doubtful accounts |  |  | (13,785 | ) |  |  | (20,526 | )
Accounts receivable, net of allowances for doubtful accounts |  | $ | 3,391,405 |  |  | $ | 625,341 |
Summary of Valuation Allowance [Table Text Block] |
|  | Balance at Beginning of Year |  |  | Charged to Costs and Expenses |  |  | Deductions From Reserves |  |  | Balance at End of Year |
Year Ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts |  | $ | 20,526 |  |  | $ | - |  |  | $ | (6,741 | ) |  | $ | 13,785 |
Year Ended December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts |  | $ | 20,526 |  |  | $ | - |  |  | $ | - |  |  | $ | 20,526 |
Useful Lives of Property Plan and Equipment [Table Text Block] |
|  | 2015 |
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] |
|  | Year ended December 31, |
|  | 2015 |  |  | 2014 |
Selling, general and administrative |  | $ | 134,047 |  |  | $ | 161,466 |
Research, development and engineering |  |  | 139,042 |  |  |  | 45,792 |
|  | $ | 273,089 |  |  | $ | 207,258 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Year ended December 31, |
|  | 2015 |  |  | 2014 |
Weighted average Risk free interest rate |  |  | 1.46 | % |  |  | 1.34 | %
Expected life of options (in years) |  |  | 4.5 |  |  |  | 4.5 |
Expected dividends |  |  | 0 | % |  |  | 0 | %
Weighted average Volatility of stock price |  |  | 117 | % |  |  | 119 | %

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