Stock-Based Compensation Expense and Shareholders' Equity (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2020	Oct. 31, 2019
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 28,394	$ 24,765
Net impact of deferred stock-based compensation	(310)	(207)
Total stock-based compensation expense	28,084	24,558
Total stock-based compensation expense	28,084	24,558
Unrecognized Expense	296,860
Cost of subscription and support revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	2,602	1,633
Cost of license revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	251	180
Cost of services revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	5,543	5,332
Research and development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	7,247	6,181
Sales and marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	5,977	5,157
General and administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	6,464	$ 6,075
Stock Options
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Unrecognized Expense	$ 370
Weighted Average Expected Recognition Period	6 months
Stock Awards
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Unrecognized Expense	$ 296,490
Weighted Average Expected Recognition Period	2 years 9 months 18 days