Commitments and Contingencies (Details)		3 Months Ended
	Nov. 20, 2012 lawsuit	Jul. 31, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of lawsuits where the Company is named as a defendant | lawsuit	4
Period covered by lawsuit		2 years
Minimum
Loss Contingencies
Statutory damages per violation		$ 100
Maximum
Loss Contingencies
Statutory damages per violation		$ 1,000