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Note 4 - Inventories (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Jul. 03, 2021
Jun. 27, 2020
Mar. 31, 2021
Inventory, LIFO Reserve $ 131,509 $ 142,126 $ 128,672
Inventory, LIFO Reserve, Period Charge $ 2,800 $ (2,100)