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Nature of Operations and Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 27, 2014
Dec. 28, 2013
Inventory [Line Items]    
Raw materials $ 3,950us-gaap_InventoryRawMaterials $ 3,317us-gaap_InventoryRawMaterials
Work in process 3,967us-gaap_InventoryWorkInProcess 3,357us-gaap_InventoryWorkInProcess
Finished goods 15,858us-gaap_InventoryFinishedGoods 12,267us-gaap_InventoryFinishedGoods
Total Inventory $ 23,775us-gaap_InventoryNet $ 18,941us-gaap_InventoryNet