Pension Expense (Tables)

6 Months Ended

Jun. 18, 2011

Pension Expense [Abstract]

Summary of net pension and Supplemental Executive Retirement Plan costs recognized

	12 Weeks Ended						24 Weeks Ended
	June 18, 2011			June 19, 2010			June 18, 2011			June 19, 2010
Service cost pertaining to benefits earned during the period	$	1,500		$	1,322		$	3,000		$	2,644
Interest cost on projected benefit obligations		3,075			2,936			6,150			5,871
Expected return on pension assets		(3,323	)		(2,877	)		(6,646	)		(5,754	)
Net amortization loss		2,787			2,378			5,574			4,756
Net pension expense	$	4,039		$	3,759		$	8,078		$	7,517