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Property, Plant and Equipment, Net (Details) - USD ($)
$ in Thousands
Jan. 01, 2016
Jan. 02, 2015
Property, Plant and Equipment [Line Items]    
Machinery and equipment $ 17,094 $ 15,674
Furniture and fixtures 6,980 6,535
Leasehold improvements 8,611 8,400
Property, Plant and Equipment, Gross 32,685 30,609
Less accumulated depreciation 22,590 20,543
Property, Plant and Equipment, Net $ 10,095 $ 10,066