Comprehensive Income (Loss) (Tables)

12 Months Ended

Nov. 30, 2011

Comprehensive Income (Loss) [Abstract]

Components Of Accumulated Other Comprehensive Income (Loss)

	November 30,
	2011			2010			2009
Cumulative translation adjustment, net of tax	$	(21,057	)	$	(22,066	)	$	(16,386	)
Unrealized gain (loss) on available-for-sale securities		25			(10	)		(27	)
Total accumulated other comprehensive loss	$	(21,032	)	$	(22,076	)	$	(16,413	)