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Note A - The Company and Summary of Significant Accounting Policies (Details Textual) |  | 12 Months Ended |
--- | --- | --- | ---
Dec. 29, 2016 | Dec. 31, 2017 USD ($) shares | Dec. 31, 2016 USD ($) shares | Dec. 31, 2015 USD ($)
Retained Earnings (Accumulated Deficit) |  | $ (67,076,492) | $ (62,801,154) |
Cash and Cash Equivalents, at Carrying Value |  | 288,721 | 1,061,307 | $ 4,321,078
Operational Costs Per Month |  | 592,000 |  |
Allowance for Doubtful Accounts Receivable, Noncurrent |  | $ 1,000,000 | 500,000 |
Percentage of Remaining Balance Owned Reserved |  | 57.00% |  |
Advertising Expense |  | $ 386,000 | $ 299,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  | 1,234,167 | 27,087 |
Minimum [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  | 3 years |  |
Maximum [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  | 4 years |  |
Licensing Agreements [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 10 years |  |
Reverse Stock Split [Member] |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 12 |  |  |

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