Income Taxes (Details 4) - USD ($) $ in Thousands	Jul. 31, 2020	Jul. 31, 2019
Schedule Of Deferred Tax Assets (Liabilities) [Line Items]
Net deferred tax liabilities	$ 71,473	$ 48,272
UNITED STATES
Schedule Of Deferred Tax Assets (Liabilities) [Line Items]
Deferred Income Taxes and Other Liabilities, Noncurrent	66,082	44,499
International [Member]
Schedule Of Deferred Tax Assets (Liabilities) [Line Items]
Deferred Income Taxes and Other Liabilities, Noncurrent	$ 5,391	$ 3,773