Long-Term Debt - Mortgages (Schedule of long-term debt) (Details) (USD $)	3 Months Ended
	Oct. 31, 2014	Jul. 31, 2014
Due Within One Year	$ 240,000	$ 240,000
Due After One Year	5,137,640	5,181,335
Fishkill, New York Property [Member]
Due Within One Year	68,112	68,112
Due After One Year	1,458,062	1,470,463
Current Annual Interest Rate	6.98%
Final Payment Date	Feb. 18, 2015
Bond St. Building, Brooklyn, N Y [Member]
Due Within One Year	171,888	171,888
Due After One Year	$ 3,679,578	$ 3,710,872
Current Annual Interest Rate	6.98%
Final Payment Date	Feb. 18, 2015