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SEGMENT AND GEOGRAPHIC INFORMATION - Revenue and Other Financial Information by Reportable Segment (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 30, 2024 USD ($) segment | Apr. 01, 2023 USD ($)
Segment Reporting [Abstract] |  |
Number of reportable segments | segment | 3 |
Segment Reporting Information [Line Items] |  |
Revenue | $ 1,011,560 | $ 1,029,373
Cost of revenue (excluding amortization of intangible assets) | 666,717 | 651,719
Selling, general and administrative | 186,291 | 174,846
Amortization of intangible assets | 32,575 | 34,916
Operating income | 125,977 | 167,892
Capital Expenditures | 79,144 | 106,875
Depreciation and amortization | 85,357 | 77,069
Unallocated corporate |  |
Segment Reporting Information [Line Items] |  |
Selling, general and administrative | 65,692 | 46,054
Operating income | (65,692) | (46,054)
Capital Expenditures | 1,279 | 869
Depreciation and amortization | 1,640 | 1,046
RMS |  |
Segment Reporting Information [Line Items] |  |
Revenue | 220,907 | 199,766
RMS | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Revenue | 220,907 | 199,766
Cost of revenue (excluding amortization of intangible assets) | 140,925 | 126,804
Selling, general and administrative | 30,893 | 27,058
Amortization of intangible assets | 5,940 | 5,495
Operating income | 43,149 | 40,409
Capital Expenditures | 20,044 | 19,084
Depreciation and amortization | 18,123 | 13,489
DSA |  |
Segment Reporting Information [Line Items] |  |
Revenue | 605,452 | 662,353
DSA | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Revenue | 605,452 | 662,353
Cost of revenue (excluding amortization of intangible assets) | 417,912 | 411,523
Selling, general and administrative | 56,859 | 61,998
Amortization of intangible assets | 15,842 | 17,401
Operating income | 114,839 | 171,431
Capital Expenditures | 48,959 | 65,184
Depreciation and amortization | 45,789 | 42,450
Manufacturing |  |
Segment Reporting Information [Line Items] |  |
Revenue | 185,201 | 167,254
Manufacturing | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Revenue | 185,201 | 167,254
Cost of revenue (excluding amortization of intangible assets) | 107,880 | 113,392
Selling, general and administrative | 32,847 | 39,736
Amortization of intangible assets | 10,793 | 12,020
Operating income | 33,681 | 2,106
Capital Expenditures | 8,862 | 21,738
Depreciation and amortization | $ 19,805 | $ 20,084

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