Accrued Restructuring and Acquisition Integration Costs (Accrued Restructuring And Integration Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 1,536	$ 7,842
Restructuring charges	12,553	(648)	8,926
Cash paid	(8,183)	(5,658)
Restructuring reserve, ending balance	5,906	1,536	7,842
Accrued Excess Facilities
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	1,331	2,823
Restructuring charges	483	(353)
Cash paid	(605)	(1,139)
Restructuring reserve, ending balance	1,209	1,331
Accrued Severance and Other
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	205	5,019
Restructuring charges	12,070	(295)
Cash paid	(7,578)	(4,519)
Restructuring reserve, ending balance	$ 4,697	$ 205