Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Operating Loss Carryforwards [Line Items]
Foreign operating loss-carryforward expiration dates	2022 to 2038
State Net Operating Loss Carryforwards Expiration Dates	2032
Foreign Tax Credit Carryforward Expiration Dates	2022 to 2031
State Research And Development Tax Credit Carryforward Expiration Dates	2022 to 2036
Unrecognized Tax Benefits	$ 21,912	$ 13,622	$ 14,841	$ 20,430
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	18,717
Unrecognized Tax Benefits Recognized In Other Liabilities	15,427	8,931
Reduction Of Longterm Deferred Income Tax Assets Excluding Interest and Penalties	6,485	4,691
Unrecognized Tax Benefits, Interest on Income Taxes Expense	(596)	(372)	(1,013)
Unrecognized Tax Benefits, Income Tax Penalties Expense		(96)	$ (2,357)
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	2,297	1,354
Unrecognized Tax Benefits, Income Tax Penalties Accrued	2,098	$ 658
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	3,253
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	$ 295
Internal Revenue Service (IRS) [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Open Tax Year	2019
Internal Revenue Service (IRS) [Member] | Tax Year 2019 [Member]
Operating Loss Carryforwards [Line Items]
Open Tax Year	2021
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 102,847
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration	90,475
Other Tax Carryforward, Gross Amount	22,141
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	23,164
Other Tax Carryforward, Gross Amount	$ 11,481