Derivatives and Hedging - Additional Information (Detail)	Oct. 31, 2017 USD ($) CrossCurrencySwap	Aug. 31, 2019 USD ($) ForwardContract	May 31, 2019 USD ($) ForwardContract	Oct. 31, 2017 EUR (€) CrossCurrencySwap
Derivatives Not Designated as Hedges
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Number of foreign currency forward contract held | ForwardContract		1	1
Forward Contracts Held to Purchase Foreign Currencies | Derivatives Not Designated as Hedges
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Notional amount | $		$ 77,700,000	$ 38,700,000
Net Investment Hedge
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Number of cross currency swaps executed | CrossCurrencySwap	2			2
Notional amount	$ 100,000,000			€ 85,250,000
Derivative instruments maturity date	2022-11