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Accumulated Other Comprehensive Loss - Reclassifications Out of AOCL (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 26, 2019
Dec. 27, 2018
Dec. 26, 2019
Dec. 27, 2018
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Unrecognized prior service cost $ (240) $ (240) $ (479) $ (479)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Unrecognized net loss (104) (23) (208) (47)
Amortization of Defined Benefit Pension Items [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Total before tax (344) (263) (687) (526)
Tax effect 86 66 172 132
Amortization of defined pension items, net of tax $ (258) $ (197) $ (515) $ (394)