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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

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