Segment Reporting (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Segment Reporting Information [Line Items]
Revenues	$ 164,593	$ 190,976	$ 301,481	$ 323,104
Depreciation and amortization	24,757	22,788	48,766	45,561
Operating income (loss)	19,217	34,739	40,808	57,078
Capital expenditures	32,510	43,461	75,928	74,708
Total assets	2,155,737	2,117,570	2,155,737	2,117,570
Equity investments	115,486	129,687	115,486	129,687
Motorsports Event
Segment Reporting Information [Line Items]
Revenues	160,831	176,728	285,580	304,573
Depreciation and amortization	23,535	21,310	46,223	42,625
Operating income (loss)	19,098	35,286	43,463	60,044
Capital expenditures	32,140	39,140	72,997	69,501
Total assets	1,671,716	1,588,582	1,671,716	1,588,582
All Other
Segment Reporting Information [Line Items]
Revenues	3,762	14,248	15,901	18,531
Depreciation and amortization	1,222	1,478	2,543	2,936
Operating income (loss)	119	(547)	(2,655)	(2,966)
Capital expenditures	370	4,321	2,931	5,207
Total assets	484,021	528,988	484,021	528,988
Equity investments	$ 115,486	$ 129,687	$ 115,486	$ 129,687