Nature Of Business And Summary Of Significant Accounting Policies Nature Of Business And Summary Of Significant Accounting Policies (Allowance for Sales Credit Memos) (Details) (Allowance for Sales Credit Memos [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Allowance for Sales Credit Memos [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 746	$ 1,188	$ 1,211
Charge to revenue	225	109	0
Write-offs and other	(71)	(551)	(23)
Translation adjustments	3	0	0
Ending balance	$ 903	$ 746	$ 1,188