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Note A - The Company and Summary of Significant Accounting Policies (Details Textual) - USD ($) |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2019 | Jan. 01, 2019 | Dec. 31, 2017
Retained Earnings (Accumulated Deficit), Ending Balance |  | $ (89,723,016) | $ (75,134,316) |  |  |
Cash and Cash Equivalents, at Carrying Value, Ending Balance |  | 79,013 | 323,943 |  |  | $ 288,721
Operational Costs Per Month |  | $ 525,000 |  |  |  |
Capitalized Contract Cost, Amortization Period (Year) |  | 4 years |  |  |  |
Accounts Receivable, Allowance for Credit Loss, Noncurrent |  | $ 1,720,000 | $ 1,720,000 |  |  |
Percentage of Remaining Balance Owned Reserved |  | 100.00% | 100.00% |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | $ 2,267,528 | $ 4,044,542 |  |  |
Advertising Expense |  | $ 317,000 | $ 309,000 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) |  | 241,334 | 351,918 |  |  |
Operating Lease, Right-of-Use Asset |  | $ 566,479 | $ 0 | $ 116,875 | $ 602,937 |
Operating Lease, Liability, Total |  | $ 561,026 |  | $ 116,875 |  |
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 |  | $ 442,649 | 1,739,897 |  |  |
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, Ending Balance | $ 555,555 |  |  |  |  |

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