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Retirement Plan - Components of AOCL (Detail) - USD ($)
$ in Thousands
Jun. 28, 2018
Jun. 29, 2017
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]    
Unrecognized net loss $ (2,951) $ (3,624)
Unrecognized prior service cost (2,392) (3,349)
Tax effect 2,162 2,569
Net amount unrecognized $ (3,181) $ (4,404)