Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Changes in Level 3 Securities (Details)

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Fair Value - Changes in Level 3 Securities (Details) - Level 3 [Member] - USD ($)
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair Value Beginning Balance $ 9,287,209 $ 8,393,683
Acquisitions 0 0
Disposals 0 0
Total Realized and Unrealized Gains Included in Net Income 1,410,623 958,443
Return of Capital Adjustments Impacting Cost Basis of Securities (239,850) 113,610
Fair Value Ending Balance 10,457,982 9,465,736
Changes in Unrealized Gains, Included In Net Income, Relating to Securities Still Held 1,410,623 958,443
Other Equity Securities [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair Value Beginning Balance 9,287,209 8,393,683
Acquisitions 0 0
Disposals 0 0
Total Realized and Unrealized Gains Included in Net Income 1,410,623 958,443
Return of Capital Adjustments Impacting Cost Basis of Securities (239,850) 113,610
Fair Value Ending Balance 10,457,982 9,465,736
Changes in Unrealized Gains, Included In Net Income, Relating to Securities Still Held $ 1,410,623 $ 958,443