Retirement Plans (Tables)

6 Months Ended

Aug. 29, 2015

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
	August 29, 2015			August 30, 2014			August 29, 2015		August 30, 2014		August 29, 2015			August 30, 2014			August 29, 2015		August 30, 2014
Service cost	$	513		$	792		$	—	$	—	$	1,025		$	1,585		$	—	$	—
Interest cost	1,634			1,631			119		135		3,267			3,262			237		270
Expected return on plan assets	(1,593		)	(1,929		)	—		—		(3,186		)	(3,858		)	—		—
Amortization of unrecognized prior service cost	18			60			—		—		34			120			—		—
Amortization of unrecognized net loss	978			600			—		—		1,957			1,199			—		—
Net pension expense	$	1,550		$	1,154		$	119	$	135	$	3,097		$	2,308		$	237	$	270