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, 2014	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2010
Allowance for Sales Credit Memos [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 903	$ 746		$ 1,188
Charge to revenue	51	225	109
Write-offs and other	(6)	(71)	(551)
Translation adjustments	(2)	3	0
Ending balance	$ 946	$ 903	$ 746	$ 1,188