Inventories (Components Of Inventories) (Detail) - USD ($) $ in Thousands	Sep. 29, 2018	Jul. 01, 2018	Jun. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Finished goods	$ 9,507		$ 14,927
Work-in-process	16,966		22,254
Finished goods	9,507		14,927
Work-in-process	16,966		22,254
Raw materials and supplies	73,061		73,134
Inventories	99,534	$ 99,105	$ 110,315
Accounting Standards Update 2014-09 [Member] \| Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Finished goods	8,300
Work-in-process	7,900
Finished goods	8,300
Work-in-process	7,900
Inventories	$ 16,154	$ (11,210)

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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