Stockholders' Equity (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2012	Dec. 02, 2011	Dec. 03, 2010
Net unrealized gains on available-for-sale securities:
Unrealized gains on available-for-sale securities	$ 14,698	$ 10,810
Unrealized losses on available-for-sale securities	(259)	(4,794)
Total net unrealized gains on available-for-sale securities	14,439	6,016
Net unrealized gains on derivative instruments designated as hedging instruments	6,604	13,354
Cumulative foreign currency translation adjustments	9,669	10,580	7,632
Total accumulated other comprehensive income, net of taxes	30,712	29,950
Foreign currency translation adjustments [Abstract]
Beginning Balance	10,580	7,632	10,640
Foreign currency translation adjustments	(2,225)	5,156	(4,144)
Income tax effect relating to translation adjustments for undistributed foreign earnings	1,314	(2,208)	1,136
Ending Balance	$ 9,669	$ 10,580	$ 7,632