Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	May 31, 2014	Nov. 30, 2013
Debt Instrument [Line Items]
Long-term debt	$ 274,166	$ 274,487
Less: current portion	3,012	2,807
Long-Term Debt	271,154	271,680
4.63 percent Senior Notes
Debt Instrument [Line Items]
Long-term debt	65,000	65,000
3.95 percent Senior Notes
Debt Instrument [Line Items]
Long-term debt	100,000	100,000
4.82 percent Revenue Bonds
Debt Instrument [Line Items]
Long-term debt	502	662
6.25 percent Term Loan
Debt Instrument [Line Items]
Long-term debt	49,754	49,948
TIF bond debt service funding commitment
Debt Instrument [Line Items]
Long-term debt	58,910	58,877
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 0