Retirement Benefits (Tables)

6 Months Ended

Aug. 30, 2013

Compensation And Retirement Disclosure [Abstract]

Components of Periodic Benefit Cost for Corporation's Defined Benefit Pension and Postretirement Benefit Plans

The components of periodic benefit cost for the Corporation’s defined benefit pension and postretirement benefit plans are as follows: 

	Defined Benefit Pension
	Three Months Ended						Six months Ended
	August 30,			August 24,			August 30,			August 24,
(In thousands)	2013			2012			2013			2012
Service cost	$	320		$	333		$	640		$	667
Interest cost		1,736			1,839			3,478			3,683
Expected return on plan assets		(1,567	)		(1,609	)		(3,141	)		(3,222	)
Amortization of prior service cost		51			62			102			123
Amortization of actuarial loss		913			815			1,830			1,631
	$	1,453		$	1,440		$	2,909		$	2,882

	Postretirement Benefits
	Three Months Ended						Six months Ended
	August 30,			August 24,			August 30,			August 24,
(In thousands)	2013			2012			2013			2012
Service cost	$	137		$	212		$	275		$	425
Interest cost		612			800			1,225			1,600
Expected return on plan assets		(762	)		(840	)		(1,525	)		(1,680	)
Amortization of prior service credit		(325	)		(519	)		(650	)		(1,038	)
Amortization of actuarial gain		(212	)		—			(425	)		—
	$	(550	)	$	(347	)	$	(1,100	)	$	(693	)