Retirement Plans (Details) - Defined Benefit Pension Plan - USD ($) $ in Thousands	3 Months Ended
	Jun. 02, 2018	Jun. 03, 2017
Net periodic pension expense
Service cost	$ 312	$ 346
Interest cost	1,578	1,603
Expected return on plan assets	(1,434)	(1,147)
Amortization of unrecognized net loss	507	856
Net periodic pension expense	963	$ 1,658
Employer contributions	813
Expected employer contribution during the remainder of fiscal year	$ 3,800