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Note Q - Income Taxes - Components of Deferred Taxes (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Current asset:
Accrued compensation	$ 67,000	$ 75,000
Accounts receivable allowance	202,000	5,000
Stock-based compensation	360,000	258,000
Basis differences in fixed assets	(8,000)	(16,000)
Basis differences in intangible assets	60,000	55,000
Net operating loss and credit carryforwards	18,597,000	17,994,000
Valuation allowances	$ (19,278,000)	$ (18,371,000)

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