Retirement Plans (Tables)

6 Months Ended

Sep. 01, 2012

Retirement Plans

Summary of net periodic pension expense for the defined benefit plans

	Defined Benefit Pension Plan						Nonqualified Executive Retirement Plans				Defined Benefit Pension Plan						Nonqualified Executive Retirement Plans
	Thirteen Week Period Ended										Twenty-Six Week Period Ended
	September 1, 2012			August 27, 2011			September 1, 2012		August 27, 2011		September 1, 2012			August 27, 2011			September 1, 2012		August 27, 2011
Service cost	$	867		$	838		$	—	$	5	$	1,735		$	1,676		$	—	$	10
Interest cost		1,565			1,518			154		192		3,131			3,036			308		385
Expected return on plan assets		(1,749	)		(1,505	)		—		—		(3,498	)		(3,010	)		—		—
Amortization of unrecognized prior service cost		60			157			—		—		120			314			—		—
Amortization of unrecognized net loss (gain)		960			422			—		—		1,920			844			—		—
Net pension expense (income)	$	1,703		$	1,430		$	154	$	197	$	3,408		$	2,860		$	308	$	395