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Derivatives and Hedging Activities - Additional Information (Detail) € in Thousands, $ in Thousands	12 Months Ended
	Jul. 31, 2020 USD ($)	Jul. 31, 2019 USD ($)	Jul. 31, 2018 USD ($)	Jul. 31, 2019 EUR (€)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 27,707	$ 29,389
Foreign exchange contracts			$ 966
Derivative maturity	18 months
Accumulated other comprehensive (loss) income	$ (66,477)	(71,254)	(56,401)
Reclassification adjustment for (gains) losses included in net income	614	1,048	(551)
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contracts	(576)	837	966
Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contracts	1,517	2,480	612
Euro-denominated notes payable in 2020 at a fixed rate of 4.24% [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net investment hedges to hedge portions of net investment		45,000
Designated as hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	24,600	26,013
Designated as hedging instruments [Member] \| Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	385	805
Designated as hedging instruments [Member] \| EUR denominated unsecured debt [Domain] \| Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Accumulated other comprehensive (loss) income	13,957			€ 12,440
Not designated as hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	3,107	3,376
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 2	$ (52)	$ 24