Description Of The Business And Significant Accounting Policies (Narrative) (Details)	3 Months Ended
	Oct. 31, 2016 USD ($) customer item	Oct. 31, 2015 USD ($) customer
Description Of Business And Significant Accounting Policies [Line Items]
Number of manufacturers	1,800
Number of equipment dealers, distributors and manufacturers	23,500
Estimated economic life	10 years 11 months 23 days	11 years 1 month 17 days
Legal provisions | $	$ 0	$ 0
Minimum [Member] | Software Products [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Estimated economic life	2 years
Maximum [Member] | Software Products [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Estimated economic life	14 years
Customer Concentration Risk [Member] | Revenue [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Number of customers accounting for ten percent or more of revenue | customer	0	0
Customer Concentration Risk [Member] | Minimum [Member] | Revenue [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Percentage of revenue	10.00%	10.00%