Segment Reporting (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2015	Aug. 31, 2014
Segment Reporting Information [Line Items]
Revenues	$ 125,878	$ 130,312	$ 427,359	$ 453,416
Depreciation and amortization	24,224	22,438	72,990	67,999
Operating income (loss)	(7,138)	(3,525)	33,670	53,553
Capital expenditures	29,809	57,778	105,737	132,486
Total assets	2,135,197	2,088,551	2,135,197	2,088,551
Equity investments	107,721	126,623	107,721	126,623
Motorsports Event
Segment Reporting Information [Line Items]
Revenues	113,161	109,800	398,741	421,758
Depreciation and amortization	23,009	20,971	69,232	63,647
Operating income (loss)	(5,560)	(2,834)	37,903	57,809
Capital expenditures	28,230	56,775	101,227	126,276
Total assets	1,674,431	1,615,769	1,674,431	1,615,769
All Other
Segment Reporting Information [Line Items]
Revenues	12,717	20,512	28,618	31,658
Depreciation and amortization	1,215	1,467	3,758	4,352
Operating income (loss)	(1,578)	(691)	(4,233)	(4,256)
Capital expenditures	1,579	1,003	4,510	6,210
Total assets	460,766	472,782	460,766	472,782
Equity investments	$ 107,721	$ 126,623	$ 107,721	$ 126,623