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GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | Jun. 29, 2024 | Dec. 30, 2023
--- | --- | ---
Other intangible assets |  |
Gross | $ 1,716,746 | $ 1,729,559
Accumulated Amortization | (916,617) | (865,508)
Net | 800,129 | 864,051
Client relationships |  |
Other intangible assets |  |
Gross | 1,518,194 | 1,528,780
Accumulated Amortization | (766,261) | (721,322)
Net | 751,933 | 807,458
Technology |  |
Other intangible assets |  |
Gross | 140,737 | 142,190
Accumulated Amortization | (114,410) | (111,764)
Net | 26,327 | 30,426
Trademarks and trade names |  |
Other intangible assets |  |
Gross | 11,849 | 11,878
Accumulated Amortization | (5,098) | (4,568)
Net | 6,751 | 7,310
Backlog |  |
Other intangible assets |  |
Gross | 3,100 | 3,100
Accumulated Amortization | (2,792) | (2,177)
Net | 308 | 923
Other |  |
Other intangible assets |  |
Gross | 42,866 | 43,611
Accumulated Amortization | (28,056) | (25,677)
Net | $ 14,810 | $ 17,934

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