The Company and Summary of Significant Accounting Policies and Estimates (Details Textual)	3 Months Ended		9 Months Ended
	Apr. 30, 2020 USD ($) customer	Apr. 30, 2019 customer	Apr. 30, 2020 USD ($)	Aug. 01, 2019 USD ($)	Jul. 31, 2019 USD ($)	Aug. 01, 2018 USD ($)	Mar. 31, 2018 USD ($)
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Number of customers, concentration of credit risk | customer	1	1
Percentage of Revenue	10.00%	10.00%
Percentage of accounts receivable	10.00%		10.00%		10.00%
Retained earnings	$ 124,181,000		$ 124,181,000		$ 190,047,000
Revenue, performance obligations, timing			Term licenses generally have had a two-year initial term with a customer option to renew on an annual basis after the initial term. In certain circumstances, the Company will enter into term licenses with an initial term of more than two years or a renewal period longer than one year. The related maintenance for term licenses follow the same contract periods. Subscriptions are typically sold with a three- to five- year initial term with a customer option to renew on an annual basis after the initial term. Professional services typically are time and materials contracts that last for a period of approximately one year. The Company’s subscription periods are generally three to five years. Subscription services are typically satisfied over three to five years, maintenance services are generally satisfied within one year, and professional services are typically satisfied within one year.
Capitalized contract cost, amortization period	5 years		5 years
Operating lease assets	$ 85,902,000		$ 85,902,000
Total lease liability balance	$ 109,032,000		$ 109,032,000
Restricted Stock Units (RSUs)
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Period of time based Vesting	4 years		4 years
TSR PSUs
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Period of time based Vesting	3 years
Senior Notes | Convertible Senior Notes, 1.250%
Finite-Lived Intangible Assets [Line Items]
Aggregate principal amount							$ 400,000,000.0
Stated interest rate							1.25%
Topic 606
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Retained earnings						$ 44,300,000
ASU 2016-02
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Operating lease assets				$ 93,000,000.0
Total lease liability balance				$ 111,700,000
Minimum | Computer software
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted-Average Useful Life (in years)			3 years
Maximum | Computer software
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted-Average Useful Life (in years)			5 years