Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 03, 2011	Nov. 27, 2010	Nov. 28, 2009
Common Stock [Abstract]
Common Stock Authorized	160,000,000
Common Stock Par Value	$ 1.00
Common stock outstanding	49,449,579	49,194,251	48,657,618
Dividends declared per common share	$ 0.295	$ 0.278	$ 0.270
Stock Repurchase Program, Authorized Amount		$ 100,000
Repurchases of common stock	$ 8,510	$ 377	$ 362
Beginning balance	49,194,251	48,657,618	48,447,610
Stock options exercised	538,709	358,421	58,915
Shares Swapped For Stock Option Exercises	(11,017)	0	0
Deferred compensation paid	17,233	37,862	31,777
Restricted units vested	49,640	13,370	12,413
Restricted shares granted	227,530	227,527
Shares withheld for taxes	(48,675)	(17,804)	(24,808)
Restricted shares forfeited	103,077	40,486
Shares repurchased under repurchase plan	(345,446)	0	0
Ending balance	49,449,579	49,194,251	48,657,618
Features of Convertible Preferred Stock [Abstract]
Preferred Stock, Redemption Price Per Share	$ 95
Preferred Stock [Abstract]
Preferred Stock Shares Authorized	10,045,900