Condensed Consolidating Statement of Operations (Detail) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2011	Aug. 31, 2010	Aug. 31, 2011	Aug. 31, 2010
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Total revenues	$ 150,297	$ 160,194	$ 437,743	$ 454,386
Total expenses	129,777	138,621	353,800	371,758
Operating (loss) income	20,520	21,573	83,943	82,628
Interest and other (expense) income, net	(5,555)	(17,668)	(14,141)	(29,872)
(Loss) income from continuing operations	9,650	3,609	42,958	39,358
Net (loss) income	9,650	3,609	42,958	39,311
Parent Company
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Total revenues	776	644	2,299	2,014
Total expenses	6,652	8,342	19,440	23,956
Operating (loss) income	(5,876)	(7,698)	(17,141)	(21,942)
Interest and other (expense) income, net	(17,416)	(13,741)	(19,288)	(11,510)
(Loss) income from continuing operations				(33,074)
Net (loss) income	(34,870)	(18,732)	(57,381)	(33,074)
Combined Guarantor Subsidiaries
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Total revenues	76,856	139,298	394,335	462,282
Total expenses	54,011	109,780	292,936	352,813
Operating (loss) income	22,845	29,518	101,399	109,469
Interest and other (expense) income, net	4,435	2,291	13,138	6,436
(Loss) income from continuing operations				102,081
Net (loss) income	33,543	28,758	108,623	102,081
Non-Guarantor Subsidiaries
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Total revenues	37,830	39,359	72,916	74,841
Total expenses	34,279	39,606	73,231	79,740
Operating (loss) income	3,551	(247)	(315)	(4,899)
Interest and other (expense) income, net	(3,565)	(1,774)	(7,966)	(7,060)
(Loss) income from continuing operations				(11,911)
Net (loss) income	(14)	(1,973)	(8,259)	(11,958)
Eliminations
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Total revenues	34,835	(19,107)	(31,807)	(84,751)
Total expenses	34,835	(19,107)	(31,807)	(84,751)
Interest and other (expense) income, net	10,991	(4,444)	(25)	(17,738)
(Loss) income from continuing operations				(17,738)
Net (loss) income	$ 10,991	$ (4,444)	$ (25)	$ (17,738)