SEGMENT AND GEOGRAPHIC INFORMATION - Revenue by Product and Service Offering (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 28, 2019 |
Sep. 28, 2019 |
Jun. 29, 2019 |
Mar. 30, 2019 |
Dec. 29, 2018 |
Sep. 29, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 28, 2019 |
Dec. 29, 2018 |
Dec. 30, 2017 |
|
Segment Reporting Information [Line Items] | |||||||||||
Revenue | $ 691,138 | $ 667,951 | $ 657,568 | $ 604,569 | $ 601,530 | $ 585,295 | $ 585,301 | $ 493,970 | $ 2,621,226 | $ 2,266,096 | $ 1,857,601 |
RMS | |||||||||||
Segment Reporting Information [Line Items] | |||||||||||
Revenue | 537,089 | 519,682 | 493,615 | ||||||||
DSA | |||||||||||
Segment Reporting Information [Line Items] | |||||||||||
Revenue | 1,618,995 | 1,316,854 | 980,022 | ||||||||
Manufacturing | |||||||||||
Segment Reporting Information [Line Items] | |||||||||||
Revenue | $ 465,142 | $ 429,560 | $ 383,964 |