Revenue - Revenue by Geographic Region (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 30, 2018 |
Mar. 31, 2017 |
|
| Disaggregation of Revenue [Line Items] | ||
| Total revenue | $ 320,516 | $ 290,063 |
| Middle East | ||
| Disaggregation of Revenue [Line Items] | ||
| Total revenue | 219,880 | 233,907 |
| United States | ||
| Disaggregation of Revenue [Line Items] | ||
| Total revenue | 73,788 | 40,010 |
| Europe | ||
| Disaggregation of Revenue [Line Items] | ||
| Total revenue | $ 26,848 | $ 16,146 |