Employee Benefit Plans (Details1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	May 30, 2013	May 31, 2012	May 26, 2011
Net periodic pension cost:
Service cost	$ 712	$ 627	$ 598
Interest cost	1,099	1,178	1,195
Net amortization of prior service cost, transition obligation and actuarial loss	286	121	108
Total	$ 2,097	$ 1,926	$ 1,901