The Company and Summary of Significant Accounting Policies and Estimates (Details Textual) (USD $)	3 Months Ended		9 Months Ended			9 Months Ended						0 Months Ended
	Apr. 30, 2014 customer	Apr. 30, 2013 customer	Apr. 30, 2014 customer	Apr. 30, 2013 customer	Jul. 31, 2013 customer	Apr. 30, 2014 Restricted Stock Units (RSUs)	Apr. 30, 2014 Stock Options	Apr. 30, 2014 Minimum	Apr. 30, 2014 Minimum Licensing Agreements	Apr. 30, 2014 Maximum	Apr. 30, 2014 Maximum Licensing Agreements	Oct. 28, 2013 Follow-on Public Offerings
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Number of Customers Concentration Of Credit Risk	0	0	0	0
Percentage of Revenue	10.00%	10.00%	10.00%	10.00%
Number of Customers Concentration of Credit Risk Receivables	2		2		1
Percentage of accounts receivable	10.00%		10.00%		10.00%
Range of General Payment Terms								30 days		90 days
Period of standard license agreement term									3 years		7 years
Adjustment for license revenues	$ 0	$ 0	$ 0	$ 3,200,000
Adjustment for service revenues	0	0	0	1,700,000
Period of RSUs time based Vesting						4 years
Period of expiration for share based payment awards							10 years
Stock Issued During Period Secondary Offering Shares												8,306,291
Price of Common Stock Under Public Offerings												$ 48.75
Proceeds from issuance of common stock in connection with public offering, net of underwriting discounts and commissions			389,949,000	0								389,900,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs												$ 400,000