Significant Customers (Details) - Customers	9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Customer Two [Member] | Revenue [Member]
Significant Customers Textual [Abstract]
Concentration risk, percentage	7.00%	23.00%
Number of customers	5	4
Customer Two [Member] | Accounts Receivable [Member]
Significant Customers Textual [Abstract]
Concentration risk, percentage	12.00%	11.00%
Number of customers	4	3
Customer Three [Member] | Revenue [Member]
Significant Customers Textual [Abstract]
Concentration risk, percentage	5.00%	11.00%
Number of customers	5	4
Customer Three [Member] | Accounts Receivable [Member]
Significant Customers Textual [Abstract]
Concentration risk, percentage	10.00%	9.00%
Number of customers	4	3
Customer One [Member] | Revenue [Member]
Significant Customers Textual [Abstract]
Concentration risk, percentage	10.00%	28.00%
Number of customers	5	4
Customer One [Member] | Accounts Receivable [Member]
Significant Customers Textual [Abstract]
Concentration risk, percentage	13.00%	63.00%
Number of customers	4	3
Customer Five [Member] | Revenue [Member]
Significant Customers Textual [Abstract]
Concentration risk, percentage	4.00%
Number of customers	5
Customer Four [Member] | Revenue [Member]
Significant Customers Textual [Abstract]
Concentration risk, percentage	5.00%	4.00%
Number of customers	5	4
Customer Four [Member] | Accounts Receivable [Member]
Significant Customers Textual [Abstract]
Concentration risk, percentage	10.00%
Number of customers	4