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Income Taxes (Schedule Of Deferred Tax Assets And Valuation Allowance) (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Net Operating Loss Carryforwards	$ 24,679,200	$ 24,094,200
Stock option expense	1,988,000	1,843,000
Book tax differences on assets and liabilities	344,700	352,500
Valuation Allowance	$ (27,011,900)	$ (26,289,700)

- 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 share-based compensation.

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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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