v3.10.0.1
Segment and Geographical Information - Revenue by Geographic Location (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jul. 01, 2017
Jun. 30, 2018
Jul. 01, 2017
Segment Reporting Information [Line Items]        
Percentage of total revenue 100.00% 100.00% 100.00% 100.00%
Sales | Geographic Concentration Risk | United States        
Segment Reporting Information [Line Items]        
Percentage of total revenue 90.00% 91.00% 90.00% 92.00%
Sales | Geographic Concentration Risk | Non-US        
Segment Reporting Information [Line Items]        
Percentage of total revenue 10.00% 9.00% 10.00% 8.00%