Stockholders' Equity - Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan - USD ($)	12 Months Ended			115 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized to purchase (in shares)	40,000,000			40,000,000
Discount from market price	15.00%
Offering period	6 months
Maximum percentage of salary withheld for employee contribution	up to 10%
Maximum annual contributions per employee, percent	10.00%
Compensation contribution limit (as a percentage)	may not exceed 15
Maximum annual contributions per employee, conditional percent	15.00%
Share-based compensation arrangement by share-based payment award, maximum employee contribution permitted value	$ 25,000			$ 25,000
Number of shares of common stock issued pursuant to the ESPP	448,714	375,020	437,516	36,367,142
Shares were available for future grant under the Plan (in shares)	3,953,154			3,953,154