Business Segments and Geographical Information - Revenue Information by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	$ 41,757	$ 42,814	$ 38,273
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	23,952	22,590	21,043
Europe
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	7,968	9,096	7,345
Rest of Americas
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	2,676	3,199	3,309
Asia/Pacific Rim
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	$ 7,161	$ 7,929	$ 6,576