Financial Assets and Liabilities That Are Accounted For At Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Nov. 30, 2012
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Net liabilities	$ 2,030
Euro denominated long-term debt
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Net liabilities	2,030
Significant Other Observable Inputs (Level 2)
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Net liabilities	2,030
Significant Other Observable Inputs (Level 2) | Euro denominated long-term debt
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Net liabilities	$ 2,030