Inventories (Inventory Schedule) (Details) - USD ($) $ in Thousands	Aug. 25, 2018	Aug. 26, 2017
Inventory Disclosure [Abstract]
Finished goods	$ 26,513	$ 16,947
Work-in-process	68,339	60,818
Raw materials	139,039	99,919
Total	233,891	177,684
LIFO reserve	(38,763)	(35,419)
Total inventories	$ 195,128	$ 142,265

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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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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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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