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Note 15 - Income Taxes (Detail) - Deferred Taxes Assets and Liabilities (USD $)	Dec. 31, 2012	Dec. 31, 2011
Amortization of intangibles	$ 283,698	$ 283,698
Bad debt allowance	30,715	52,629
Patent litigation liability accrual	386,682	468,891
Operating loss carry forwards	17,355,970	16,920,055
Gross deferred tax assets	18,057,065	17,725,273
Valuation allowance	(18,057,065)	(17,725,273)
Net deferred tax asset	$ 0	$ 0

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the estimated loss from legal settlements.

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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