Risks and Uncertainties (Details)	Jul. 31, 2013
Minimum [Member]
Concentration Risk [Line Items]
Sales Revenue, Goods, Net	8000.00%
Percent of Cost of Goods Sold	7000.00%
Maximum [Member]
Concentration Risk [Line Items]
Sales Revenue, Goods, Net	8500.00%
Percent of Cost of Goods Sold	8000.00%