Segment Reporting - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2012	Aug. 31, 2011
Segment Reporting Disclosure [Line Items]
Revenues	$ 116,397	$ 150,813	$ 424,151	$ 439,349
Impairment of long lived assets	1,372	247	7,075	3,119
Intersegment Elimination
Segment Reporting Disclosure [Line Items]
Revenues	500	500	1,200	1,600
Motorsports Event
Segment Reporting Disclosure [Line Items]
Revenues	$ 108,000	$ 140,685	$ 402,273	$ 415,318