Marketable Securities (Schedule of investments measured at fair value) (Details) - USD ($)	Oct. 31, 2015	Jul. 31, 2015
First Eagle Global CL I [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 273,200	$ 271,462
Parnasus Core Equity Investor CL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	306,034	305,626
Columbia Flexible Income CL A [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 264,801	$ 271,076