Sales by Geographic Region and Product Category - Schedule of Revenues by Geographical Region (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Apr. 02, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geography	$ 3,283	$ 3,742
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geography	3,038		$ 3,331
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geography	69		117
Asia Pacific and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geography	65		155
Middle East [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues by geography	$ 111		$ 139