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Note A - The Company and Summary of Significant Accounting Policies (Details Textual) |  | 12 Months Ended | 24 Months Ended
--- | --- | --- | ---
Nov. 20, 2020 | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) | Dec. 31, 2020 USD ($) shares
Operational Costs Per Month |  | $ 735,000 |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 2,836,782 | $ 2,267,528 |  |
Net Cash Provided by (Used in) Financing Activities, Total |  | 24,094,012 | 2,148,727 |  |
Cash and Cash Equivalents, at Carrying Value, Ending Balance |  | $ 16,993,096 | 79,013 |  | $ 16,993,096
Percentage of Support and Maintenance Revenue to License Cost |  | 18.00% |  |  |
Capitalized Contract Cost, Amortization Period (Year) |  | 4 years |  |  | 4 years
Contract with Customer, Liability, Total |  | $ 702,336 | 359,212 |  | $ 702,336
Goodwill, Impairment Loss |  | 0 |  |  |
Accounts Receivable, Allowance for Credit Loss, Noncurrent |  | $ 1,720,000 | 1,720,000 |  | $ 1,720,000
Percentage of Remaining Balance Owned Reserved |  | 100.00% |  |  |
Advertising Expense |  | $ 494,000 | $ 317,000 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) | shares |  | 28,440 | 30,167 |  | 28,440
Minimum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 3 years |  |  |
Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 4 years |  |  |
License [Member] |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | $ 962,038 | $ 442,649 |  |
License [Member] | CHINA |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  | $ 1,100,000 |
Receivables, Net, Current, Total |  |  | 555,555 |  |
Accounts Receivable, Allowance for Credit Loss, Writeoff |  |  | $ 555,555 |  |
Reverse Stock Split [Member] |  |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 8 |  |  |  |

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