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Income Taxes (Schedule Of Deferred Tax Assets And Valuation Allowance) (Details) (USD $)
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Mar. 31, 2015
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Dec. 31, 2014
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| Income Taxes [Abstract] | ||
| Net Operating Loss Carryforwards | $ 33,568,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | $ 31,831,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |
| Stock Compensation Expense | 2,289,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 2,221,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost |
| Book tax differences on assets and liabilities | 291,000rnn_DeferredTaxAssetsBookTaxDifferencesOnAssetsAndLiabilities | 416,000rnn_DeferredTaxAssetsBookTaxDifferencesOnAssetsAndLiabilities |
| Valuation Allowance | (36,148,000)us-gaap_DeferredTaxAssetsValuationAllowance | (34,468,000)us-gaap_DeferredTaxAssetsValuationAllowance |
| Net Deferred Tax Assets |
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- Definition
Deferred Tax Assets Book Tax Differences On Assets And Liabilities No definition available.
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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