Quarterly report pursuant to Section 13 or 15(d)

Investment In Trading Securities (Schedule Of Fair Value Of Assets) (Details)

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Investment In Trading Securities (Schedule Of Fair Value Of Assets) (Details) - USD ($)
Sep. 30, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading Securities $ 1,163,925 $ 6,026,780
Fair Value [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading Securities 1,163,925 6,026,780
Money market funds 248,749 673,281
Total 1,412,674 6,700,061
Fair Value Measurements Using Quoted Prices in Active Markets (Level 1) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading Securities 1,163,925 6,026,780
Money market funds 248,749 673,281
Total $ 1,412,674 $ 6,700,061
Fair Value Measurements Using Significant Other Observable Inputs (Level 2) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading Securities
Money market funds
Total
Fair Value Measurements Using Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading Securities
Money market funds
Total