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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

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