Long-Term Debt - Mortgages (Details) (USD $)	6 Months Ended
	Jan. 31, 2013		Jul. 31, 2012
Due Within One Year	$ 164,407		$ 158,662
Due After One Year	5,509,579		5,591,597
Fishkill, New York Property [Member]
Due Within One Year	46,658	[1],[2]	45,028	[1],[2]
Due After One Year	1,563,619	[1],[2]	1,586,896	[1],[2]
Current Annual Interest Rate	6.98%	[1],[2]
Final Payment Date	Feb. 18, 2015	[1],[2]
Bond St. Building Brooklyn N Y [Member]
Due Within One Year	117,749	[1]	113,634	[1]
Due After One Year	$ 3,945,960	[1]	$ 4,004,701	[1]
Current Annual Interest Rate	6.98%	[1]
Final Payment Date	Feb. 18, 2015	[1]

[1] The Company, on August 19, 2004, closed a loan with a bank for a $12,000,000 multiple draw term loan. This loan financed seventy-five (75%) percent of the cost of capital improvements for an existing lease to a tenant and capital improvements for future tenant leases at the Company's Brooklyn, New York (Bond Street building) and Fishkill, New York properties through February 2008. The loan also financed $850,000 towards the construction of two new elevators at the Company's Brooklyn, New York property (Bond Street building). The loan consists of: a) a permanent, first mortgage loan to refinance an existing first mortgage loan affecting the Fishkill, New York property, which matured on July 1, 2004 (the "First Permanent Loan") (see Note 5(a)), b) a permanent subordinate mortgage loan in the amount of $1,870,000 (the "Second Permanent Loan"), and c) multiple, successively subordinate loans in the amount $8,295,274 ("Subordinate Building Loans"). As of August 19, 2004, the Company refinanced the existing mortgage on the Company's Fishkill, New York property, which balance was $1,834,726 and took down an additional $2,820,000 for capital improvements for two tenants at the Company's Bond Street building in Brooklyn, New York. In fiscal years 2006, 2007 and 2008, the Company drew down additional amounts totaling $916,670, on its multiple draw term loan to finance tenant improvements and brokerage commissions for the leasing of 13,026 square feet for office use at the Company's Bond Street building in Brooklyn, New York. The Company, in February 2008, converted the loan to a seven (7) year permanent mortgage loan. The interest rate on conversion was 6.98%. Since the loan has been converted to a permanent mortgage loan, the balance of the financing on this loan was for the new elevators at the Company's Bond Street building in Brooklyn, New York in the amount of $850,000 referred to above. The $850,000 was drawn down in fiscal 2010. The outstanding balance of the loan totaling $5,318,490 will become due and payable on February 18, 2015.

[2] On August 19, 2004, the Company extended the then existing loan for an additional forty-two (42) months, with an option to convert the loan to a seven (7) year permanent mortgage loan. (See Note 5(b) below). The Company in February 2008 converted the loan to a seven (7) year permanent mortgage loan. The interest rate on conversion was 6.98%.