v3.8.0.1
Segment and Geographical Information - Segment Reporting Information by Segment (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 24, 2016
Sep. 30, 2017
Sep. 24, 2016
Segment Reporting Information [Line Items]        
Revenue [1] $ 44,536 $ 40,791 $ 129,874 $ 118,241
United States        
Segment Reporting Information [Line Items]        
Revenue 40,344 37,293 118,522 107,993
Non-US        
Segment Reporting Information [Line Items]        
Revenue $ 4,192 $ 3,498 $ 11,352 $ 10,248
[1] (1) Includes related party revenue of $457 and $408 for the three months ended September 30, 2017 and September 24, 2016, respectively. Includes related party revenue of $1,281 and $965 for the nine months ended September 30, 2017 and September 24, 2016, respectively. (Note 13)