Inventory (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Mar. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 46,063	$ 44,102
Work in process	88,010	77,890
Finished goods	190,165	184,132
Inventory, total	$ 324,238	$ 306,124

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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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