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Inventories, Net (Details) (USD $)
In Thousands, unless otherwise specified
Jan. 02, 2015
Jan. 03, 2014
Public Utilities, Inventory [Line Items]    
Raw materials and purchased parts $ 2,146us-gaap_InventoryRawMaterials $ 1,367us-gaap_InventoryRawMaterials
Work-in-process 1,781us-gaap_InventoryWorkInProcess 913us-gaap_InventoryWorkInProcess
Finished goods 14,504us-gaap_InventoryFinishedGoods 11,029us-gaap_InventoryFinishedGoods
Inventory, Gross 18,431us-gaap_InventoryGross 13,309us-gaap_InventoryGross
Less inventory reserves 2,714us-gaap_InventoryValuationReserves 795us-gaap_InventoryValuationReserves
Inventory, Net $ 15,717us-gaap_InventoryNet $ 12,514us-gaap_InventoryNet