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Marketable Securities (Schedule of Securities in a Continuous Unrealized Loss Position) (Details) - USD ($)
Apr. 30, 2016
Jul. 31, 2015
Schedule of Available-for-sale Securities [Line Items]    
Fair Value $ 215,529 $ 271,076
Less Than 12 Months 1,951 $ 2,720
Equity Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Fair Value 215,529
Less Than 12 Months $ 1,951
Mutual Funds [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Fair Value $ 271,076
Less Than 12 Months $ 2,720