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Note N - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2014
Income Tax Disclosure [Abstract] |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | 2014 |  |  | 2013 |
Current asset: |  |  |  |  |  |  |  |
Accrued compensation |  | $ | 88,000 |  |  | $ | 49,000 |
Accounts receivable allowance |  |  | 8,000 |  |  |  | 8,000 |
Non-current asset (liability): |  |  |  |  |  |  |  |
Stock-based compensation |  |  | 174,000 |  |  |  | 205,000 |
Basis differences in fixed assets |  |  | (26,000 | ) |  |  | (19,000 | )
Basis differences in intangible assets |  |  | (63,000 | ) |  |  | (69,000 | )
Net operating loss and credit carryforwards |  |  | 17,540,000 |  |  |  | 17,217,000 |
Valuation allowances |  |  | (17,721,000 | ) |  |  | (17,391,000 | )
|  | $ | — |  |  | $ | — |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | 2014 |  |  | 2013 |
Federal statutory income tax rate |  |  | 34 | % |  |  | 34 | %
Permanent differences |  |  | — |  |  |  | (3 | )
Effect of net operating loss |  |  | (34 | ) |  |  | (31 | )
Effective tax rate |  |  | — | % |  |  | — | %

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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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