Inventories (Details) - USD ($) $ in Thousands	Mar. 26, 2022	Dec. 25, 2021
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 162,623	$ 130,133
Work-in-process	64,130	64,989
Finished goods	255,061	245,226
Valuation reserves	(9,865)	(10,104)
Inventories	$ 471,949	$ 430,244

Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

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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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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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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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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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