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Inventories (Details) - USD ($)
$ in Thousands
Sep. 26, 2021
Mar. 28, 2021
Summary of Inventories    
Inventory (FIFO basis) $ 80,682 $ 69,438
LIFO reserve (10,344) (5,574)
Net inventory 70,338 63,864
LIFO Inventory Amount $ 57,000 $ 46,800