Annual report pursuant to Section 13 and 15(d)

Marketable Securities (Schedule Of Cost And Fair Value Of Cash, Cash Equivalents, And Marketable Securities) (Details)

v2.4.1.9
Marketable Securities (Schedule Of Cost And Fair Value Of Cash, Cash Equivalents, And Marketable Securities) (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis, Total $ 22,905,698us-gaap_AvailableForSaleSecuritiesAmortizedCost  
Gross Unrealized Gains, Marketable Securities 122us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax  
Unrealized loss on securities available-for-sale (33,769)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax  
Fair value 22,872,051us-gaap_AvailableForSaleSecurities  
Commercial Paper [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis, Total 1,998,001us-gaap_AvailableForSaleSecuritiesAmortizedCost
/ us-gaap_InvestmentTypeAxis
= us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember 		 
Gross Unrealized Gains, Marketable Securities 62us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember 		 
Unrealized loss on securities available-for-sale (153)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember 		 
Fair value 1,997,910us-gaap_AvailableForSaleSecurities
/ us-gaap_InvestmentTypeAxis
= us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember 		 
Corporate Bonds [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis, Total 2,042,697us-gaap_AvailableForSaleSecuritiesAmortizedCost
/ us-gaap_InvestmentTypeAxis
= us-gaap_CorporateBondSecuritiesMember 		 
Unrealized loss on securities available-for-sale (6,827)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_InvestmentTypeAxis
= us-gaap_CorporateBondSecuritiesMember 		 
Fair value 2,035,870us-gaap_AvailableForSaleSecurities
/ us-gaap_InvestmentTypeAxis
= us-gaap_CorporateBondSecuritiesMember 		 
Certificates of Deposit [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis, Total 18,865,000us-gaap_AvailableForSaleSecuritiesAmortizedCost
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_CertificatesOfDepositMember 		 
Gross Unrealized Gains, Marketable Securities 60us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_CertificatesOfDepositMember 		 
Unrealized loss on securities available-for-sale (26,789)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_CertificatesOfDepositMember 		 
Fair value 18,838,271us-gaap_AvailableForSaleSecurities
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_CertificatesOfDepositMember 		 
State and Municipal Obligations [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis, Total   100,000us-gaap_AvailableForSaleSecuritiesAmortizedCost
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
Fair value   $ 100,000us-gaap_AvailableForSaleSecurities
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember