v3.7.0.1
Segment and Geographical Information - Segment Reporting Information by Segment (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 01, 2017
Jun. 25, 2016
Jul. 01, 2017
Jun. 25, 2016
Segment Reporting Information [Line Items]        
Revenue [1] $ 41,972 $ 38,184 $ 85,338 $ 77,450
United States        
Segment Reporting Information [Line Items]        
Revenue 38,336 34,789 78,178 70,700
Non-US        
Segment Reporting Information [Line Items]        
Revenue $ 3,636 $ 3,395 $ 7,160 $ 6,750
[1] (1) Includes related party revenue of $432 and $825 for the three and six months ended July 1, 2017 (Note 13)