v3.7.0.1
Segment and Geographical Information - Segment Reporting Information by Segment (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 01, 2017
Mar. 26, 2016
Segment Reporting Information [Line Items]    
Revenue $ 43,366 $ 39,266 [1]
United States    
Segment Reporting Information [Line Items]    
Revenue 39,842 35,911
Non-US    
Segment Reporting Information [Line Items]    
Revenue $ 3,524 $ 3,355
[1] (1) Includes related party revenue of $392 for the three months ended April 1, 2017 (Note 13)