Inventories Inventories (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Mar. 30, 2019
Inventory Disclosure [Abstract]
Inventory, Raw Materials, Gross	$ 34,518	$ 39,727
Inventory, Work in Process, Gross	232,075	213,784
Inventory, Finished Goods, Gross	61,616	61,847
Inventory, Net	$ 328,209	$ 315,358

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

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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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