Marketable Securities (Schedule Of Cost And Fair Value By Contractual Maturity) (Details) (USD $)
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Mar. 31, 2015
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Marketable Securities [Abstract] | |
Less than 1 year, Cost Basis, Maturity | $ 13,499,679rnn_AvailableForSaleSecuritiesDebtMaturitiesRemainingFiscalYearAmortizedCostBasis |
Less than 1 year, Fair Value, Maturity | 13,499,823rnn_AvailableForSaleSecuritiesDebtMaturitiesRemainingFiscalYearFairValue |
1 to 5 years, Cost Basis, Maturity | 5,155,066rnn_AvailableForSaleSecuritiesDebtMaturitiesYearOneThroughFiveAmortizedCostBasis |
1 to 5 years, Fair Value, Maturity | 5,155,998rnn_AvailableForSaleSecuritiesDebtMaturitiesYearOneThroughFiveFairValue |
Total Marketable Securities, Cost Basis, Maturity | 18,654,745us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis |
Total Marketable Securities, Fair Value, Maturity | $ 18,655,821us-gaap_AvailableForSaleSecuritiesDebtSecurities |
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- Definition
Available-for-sale Securities, Debt Maturities, Remaining Fiscal Year, Amortized Cost Basis No definition available.
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- Definition
Available-for-sale Securities, Debt Maturities, Remaining Fiscal Year, Fair Value No definition available.
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- Definition
Available-for-sale Securities, Debt Maturities, Year One Through Five, Amortized Cost Basis No definition available.
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- Definition
Available-for-sale Securities, Debt Maturities, Year One Through Five, Fair Value No definition available.
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- Definition
This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of debt securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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