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Accumulated Other Comprehensive Loss - Reclassifications Out of AOCL (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Dec. 24, 2015
Dec. 25, 2014
Dec. 24, 2015
Dec. 25, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Total before tax $ (253) $ (240) $ (504) $ (479)
Tax effect 99 96 197 192
Other comprehensive income, net of tax (154) (144) (307) (287)
Amortization of Defined Benefit Pension Items [Member] | Amount Reclassified from AOCL [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Total before tax (253) (240) (504) (479)
Tax effect 99 96 197 192
Other comprehensive income, net of tax (154) (144) (307) (287)
Amortization of Defined Benefit Pension Items [Member] | Amount Reclassified from AOCL [Member] | Administrative Expenses [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Unrecognized prior service cost (240) $ (240) (479) $ (479)
Unrecognized net loss $ (13)   $ (25)