Property, Plant and Equipment, Net - Property, Plant and Equipment Components (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 24, 2018
Property Plant And Equipment [Line Items]
Gross PP&E	$ 834,556	$ 832,540
Less: accumulated depreciation	(622,624)	(619,654)
Less: accumulated amortization – capital leases	(8,112)	(7,370)
Total PP&E, net	203,820	205,516
Land [Member]
Property Plant And Equipment [Line Items]
Gross PP&E	2,841	2,860
Land Improvements [Member]
Property Plant And Equipment [Line Items]
Gross PP&E	15,151	15,118
Buildings and Improvements [Member]
Property Plant And Equipment [Line Items]
Gross PP&E	157,590	157,354
Assets under Capital Leases [Member]
Property Plant And Equipment [Line Items]
Gross PP&E	34,568	34,568
Machinery and Equipment [Member]
Property Plant And Equipment [Line Items]
Gross PP&E	591,281	589,237
Computers, Software and Office Equipment [Member]
Property Plant And Equipment [Line Items]
Gross PP&E	19,879	19,723
Transportation Equipment [Member]
Property Plant And Equipment [Line Items]
Gross PP&E	5,004	5,029
Construction in Progress [Member]
Property Plant And Equipment [Line Items]
Gross PP&E	$ 8,242	$ 8,651

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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