Long-Term Debt - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended			9 Months Ended		9 Months Ended				9 Months Ended				9 Months Ended		9 Months Ended		9 Months Ended					1 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2013	Aug. 31, 2012	Nov. 30, 2012	Aug. 31, 2013 4.63 percent Senior Notes	Nov. 30, 2012 4.63 percent Senior Notes	Aug. 31, 2013 4.63 percent Senior Notes Semi Annual Payment, First Payment	Aug. 31, 2013 4.63 percent Senior Notes Semi Annual Payment, Second Payment	Aug. 31, 2013 3.95 percent Senior Notes	Nov. 30, 2012 3.95 percent Senior Notes	Aug. 31, 2013 3.95 percent Senior Notes Semi Annual Payment, First Payment	Aug. 31, 2013 3.95 percent Senior Notes Semi Annual Payment, Second Payment	Aug. 31, 2013 4.82 percent Revenue Bonds	Nov. 30, 2012 4.82 percent Revenue Bonds	Aug. 31, 2013 6.25 percent Term Loan Year	Nov. 30, 2012 6.25 percent Term Loan	Aug. 31, 2013 TIF bond debt service funding commitment	Nov. 30, 2012 TIF bond debt service funding commitment	Aug. 31, 2013 TIF bond debt service funding commitment Semi Annual Payment, First Payment	Aug. 31, 2013 TIF bond debt service funding commitment Semi Annual Payment, Second Payment	Aug. 31, 2013 TIF bond debt service funding commitment Term Bond Due December 1st 2017	Aug. 31, 2013 TIF bond debt service funding commitment Term Bond Due December 1st 2027	Aug. 31, 2013 2012 Credit Facility	Mar. 31, 2012 5.40 percent Senior Notes	Nov. 30, 2012 5.40 percent Senior Notes	Aug. 31, 2013 Accumulated Other Comprehensive Loss	Nov. 30, 2012 Accumulated Other Comprehensive Loss	Aug. 31, 2013 Accumulated Other Comprehensive Loss 4.63 percent Senior Notes	Aug. 31, 2013 London Interbank Offered Rate (LIBOR) [Member] 2012 Credit Facility Minimum	Aug. 31, 2013 London Interbank Offered Rate (LIBOR) [Member] 2012 Credit Facility Maximum
Debt Disclosure [Line Items]
Proceeds from long-term debt						$ 65,000,000				$ 100,000,000
Debt, interest rate						4.63%	4.63%			3.95%	3.95%			4.82%	4.82%	6.25%	6.25%					6.15%	6.75%			5.40%
Frequency of periodic payment						semi-annual				semi-annual
Debt Instrument Interest Rate Payment Date								January 18	July 18			March 13	September 13							April 1	October 1
Long-term debt	276,478,000		276,478,000		276,932,000	65,000,000	65,000,000			100,000,000	100,000,000			740,000	970,000	50,043,000	50,318,000	60,695,000	60,644,000			11,600,000	49,700,000
Stockholders' Equity Attributable to Parent	1,268,876,000		1,268,876,000		1,248,810,000																						(4,803,000)	(5,296,000)	(4,803,000)
Interest rate swap expense expected to be recognized during the next 12 months						700,000
Debt, monthly payment														29,000		292,000
Debt term																25
Debt, maturity date																						Dec. 01, 2017	Dec. 01, 2027
Principal payment date																		October 1
2010 Credit Facility current borrowing capacity																								300,000,000
2010 Credit Facility potential borrowing capacity																								500,000,000
Early redemption of debt																									87,000,000
Payment of redemption premium																									9,000,000
Loss on early redemption of debt			0	(9,144,000)																					9,100,000
Debt instrument basis points																														1.50%	2.25%
2010 Credit Facility amount outstanding																								0
Interest expense	3,765,000	3,714,000	11,606,000	10,055,000
Interest capitalized	400,000	200,000	800,000	2,900,000
Financing costs deferred	$ 4,500,000		$ 4,500,000		$ 5,000,000