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PENSION PLANS - Accumulated Benefit Obligations (Details) - USD ($) $ in Thousands | Jul. 30, 2016 | Jul. 25, 2015
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Compensation Related Costs [Abstract] |  |
Projected benefit obligation | $ 80,021 | $ 83,961
Accumulated benefit obligation | 80,021 | 66,809
Fair value of plan assets | $ 53,281 | $ 51,729

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