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Long-Term Debt - Senior Notes Additional Information (Detail) | Jul. 31, 2017 USD ($) | Nov. 03, 2016 USD ($) | Oct. 31, 2016 USD ($) | Jul. 15, 2011 EUR (€) | Jul. 28, 2009 USD ($) | Feb. 09, 2007 USD ($)
--- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |
Debt issuance costs, net | $ 6,900,000 |  | $ 0 |  |  |
2017 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt issued |  | $ 300,000,000.0 |  |  |  |
Senior Notes due 2017 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt issued |  |  |  |  |  | $ 300,000,000
Interest of senior notes |  |  |  |  |  | 6.75%
Senior Notes due 2019 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt issued |  |  |  |  | $ 250,000,000 |
Interest of senior notes |  |  |  |  | 7.75% |
Debt issuance costs, net | $ 900,000 |  |  |  |  |
Senior Notes due 2021 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt issued | € |  |  |  | € 200,000,000 |  |
Interest of senior notes |  |  |  | 7.375% |  |

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