v3.26.1
SEGMENT AND GEOGRAPHIC INFORMATION - Schedule of Revenue and Other Financial Information by Reportable Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Jun. 27, 2026
Jun. 28, 2025
Segment Reporting [Line Items]        
Revenue $ 1,004,078 $ 1,032,135 $ 1,999,908 $ 2,016,303
Selling, general and administrative 228,897 191,549 388,319 369,348
Amortization of intangible assets 14,589 65,384 29,934 130,648
Operating income 119,888 100,134 239,785 174,803
Interest income 1,032 1,097 2,065 2,501
Interest expense (30,340) (29,967) (57,082) (57,851)
Other (expense) income, net (37,410) 154 (161,540) (12,057)
Income before income taxes 53,170 71,418 23,228 107,396
Capital Expenditures 31,105 35,298 87,013 94,622
Depreciation and amortization 67,290 119,507 134,441 239,871
RMS        
Segment Reporting [Line Items]        
Revenue 209,475 213,271 417,842 426,344
DSA        
Segment Reporting [Line Items]        
Revenue 606,507 618,029 1,203,430 1,210,638
Manufacturing        
Segment Reporting [Line Items]        
Revenue 188,096 200,835 378,636 379,321
Operating Segments | RMS        
Segment Reporting [Line Items]        
Revenue 209,475 213,271 417,842 426,344
Cost of revenue (excluding amortization of intangible assets) 143,825 143,135 297,788 282,431
Selling, general and administrative 26,498 28,369 28,093 52,575
Amortization of intangible assets 2,875 5,981 5,911 11,947
Operating income 36,277 35,786 86,050 79,391
Capital Expenditures 4,989 3,640 16,557 10,926
Depreciation and amortization 15,733 19,710 31,873 41,471
Operating Segments | DSA        
Segment Reporting [Line Items]        
Revenue 606,507 618,029 1,203,430 1,210,638
Cost of revenue (excluding amortization of intangible assets) 412,340 421,907 847,500 842,050
Selling, general and administrative 60,115 60,270 107,639 125,563
Amortization of intangible assets 9,653 13,071 20,017 26,292
Operating income 124,399 122,781 228,274 216,733
Capital Expenditures 20,433 18,500 57,942 53,021
Depreciation and amortization 41,633 42,575 81,547 84,659
Operating Segments | Manufacturing        
Segment Reporting [Line Items]        
Revenue 188,096 200,835 378,636 379,321
Cost of revenue (excluding amortization of intangible assets) 84,539 110,026 196,582 217,023
Selling, general and administrative 35,890 32,416 65,603 66,448
Amortization of intangible assets 2,061 46,332 4,006 92,409
Operating income 65,606 12,061 112,445 3,441
Capital Expenditures 5,634 11,161 11,908 28,440
Depreciation and amortization 7,389 55,343 15,788 109,966
Operating Segments | Segment operating income        
Segment Reporting [Line Items]        
Operating income 226,282 170,628 426,769 299,565
Unallocated corporate        
Segment Reporting [Line Items]        
Selling, general and administrative 106,394 70,494 186,984 124,762
Operating income (106,394) (70,494) (186,984) (124,762)
Capital Expenditures 49 1,997 606 2,235
Depreciation and amortization $ 2,535 $ 1,879 $ 5,233 $ 3,775