Income Taxes (Provisions For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2012	Nov. 30, 2011	Nov. 30, 2010
Income Tax Disclosure [Abstract]
Current, Federal	$ 5,779	$ 20,283	$ 17,080
Current, State	883	2,017	2,452
Current, Foreign	5,970	5,131	5,392
Total current	12,632	27,431	24,924
Deferred, Federal	5,047	6,116	8,329
Deferred, State	45	277	274
Deferred, Foreign	(692)	556	(861)
Total deferred	4,400	6,949	7,742
Total	$ 17,032	$ 34,380	$ 32,666