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Information Concerning Product Lines, Geographic Information and Revenue Concentration - Schedule of Revenue by Shipment Destination (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 03, 2016
Mar. 29, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total revenue $ 2,950 $ 6,159
Asia Pacific    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total revenue 1,727 3,808
North America    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total revenue 819 1,842
Europe    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total revenue 404 509
South Korea    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total revenue $ 1,100 $ 2,400
Percentage of total revenue 37.00% 39.00%
United States    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total revenue $ 802 $ 1,800
Percentage of total revenue 27.00% 29.00%