Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies (Schedule of Investment Income) (Details)

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Significant Accounting Policies (Schedule of Investment Income) (Details) - USD ($)
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Interest income $ 84,177 $ 101,236
Realized (losses) (21) (2,893)
Unrealized gains 11,575 21,501
Management fee expenses (12,484) (16,813)
Net investment income $ 83,247 $ 103,031