ACCRUED RESTRUCTURING AND EXCESS FACILITIES COSTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Feb. 28, 2013
Restructuring Reserve [Roll Forward]
As of November 30, 2012	$ 1,536
Restructuring adjustments	7
Cash utilized	(413)
As of February 28, 2013	1,130
Accrued Facilities Restructuring
Restructuring Reserve [Roll Forward]
As of November 30, 2012	1,331
Restructuring adjustments	212
Cash utilized	(413)
As of February 28, 2013	1,130
Accrued Severance and Other
Restructuring Reserve [Roll Forward]
As of November 30, 2012	205
Restructuring adjustments	(205)
Cash utilized	0
As of February 28, 2013	$ 0