Income Taxes (Schedule Of Deferred Tax Assets And Valuation Allowance) (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Net Operating Loss Carryforwards	$ 42,678,000	$ 41,184,000
Stock Compensation Expense	1,265,000	1,608,000
Book tax differences on assets and liabilities	508,000	195,000
Valuation Allowance	(44,451,000)	(42,987,000)
Net Deferred Tax Assets

Deferred Tax Assets Book Tax Differences On Assets And Liabilities

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

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

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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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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