ACCRUED RESTRUCTURING COSTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2013	Aug. 31, 2012
Restructuring Reserve [Roll Forward]
As of November 30, 2012			$ 1,536
Restructuring charges	8,886	72	8,871	(447)
Cash utilized			(4,890)
As of August 31, 2013	5,517		5,517
Accrued Facilities Restructuring
Restructuring Reserve [Roll Forward]
As of November 30, 2012			1,331
Restructuring charges			404
Cash utilized			(679)
As of August 31, 2013	1,056		1,056
Accrued Severance and Other
Restructuring Reserve [Roll Forward]
As of November 30, 2012			205
Restructuring charges			8,467
Cash utilized			(4,211)
As of August 31, 2013	$ 4,461		$ 4,461