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Supplemental Balance Sheet Information Inventories (Details) - USD ($)
$ in Thousands
Dec. 26, 2015
Dec. 27, 2014
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 15,998 $ 15,416
Work in process 12,101 11,802
Finished products 65,636 61,825
Inventories $ 93,735 $ 89,043