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Inventories - Inventories Components (Details) - USD ($)
$ in Thousands
Dec. 27, 2020
Jun. 28, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 42,636 $ 42,758
Supplies 9,561 9,294
Work in process 6,432 6,267
Finished goods 57,061 55,609
Gross inventories 115,690 113,928
Net realizable value adjustment (4,201) (4,224)
Total inventories $ 111,489 $ 109,704