Consolidated Statements Of Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 24, 2010	Sep. 30, 2011	Sep. 24, 2010
Consolidated Statements Of Income [Abstract]
Limited partnership interest value (in dollars, per unit)	$ 1,000	$ 1,000	$ 1,000	$ 1,000