Description of Business and Summary of Significant Accounting Policies (Details 3) - USD ($)	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015
Reserves deducted from accounts receivable:
Allowance for doubtful accounts, Balance at beginning of year
Allowance for doubtful accounts, Additional changed to cost and expenses
Allowance for doubtful accounts, Deductions
Allowance for doubtful accounts, Balance at end of year