Employee Benefit Plans (Details 1) - USD ($) $ in Thousands	12 Months Ended
	May. 28, 2015	May. 29, 2014	May. 30, 2013
Net periodic pension cost:
Service cost	$ 697	$ 702	$ 712
Interest cost	1,243	1,173	1,099
Net amortization of prior service cost and actuarial loss	326	268	286
Total	$ 2,266	$ 2,143	$ 2,097