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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 |  |  |

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