Derivatives and Hedging Activities - Fair Value Balance Sheet Disclosure (Detail) - USD ($) $ in Thousands	Jul. 31, 2022	Jul. 31, 2021
Derivatives, Fair Value [Line Items]
Derivatives Assets	$ 489
Other current liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	32	$ 51
Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives Assets		150
Foreign Exchange Contract [Member] | Not designated as hedging Instruments [Member] | Other current liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	2	0
Foreign Exchange Contract [Member] | Not designated as hedging Instruments [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives Assets	0	0
Foreign Exchange Contract [Member] | Designated as hedging instruments [Member] | Other current liabilities [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	30	51
Foreign Exchange Contract [Member] | Designated as hedging instruments [Member] | Prepaid expenses and other current assets [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivatives Assets	$ 489	$ 150