Inventories (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Mar. 28, 2020
Summary of inventories
Raw materials	$ 45,821	$ 35,691
Work in process	16,223	13,953
Finished goods	48,580	63,891
Total Inventories	$ 110,624	$ 113,535

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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