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GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | Jul. 01, 2023 | Dec. 31, 2022
--- | --- | ---
Other intangible assets |  |
Gross | $ 1,742,140 | $ 1,687,390
Accumulated Amortization | (812,250) | (732,115)
Net | 929,890 | 955,275
Client relationships |  |
Other intangible assets |  |
Gross | 1,534,069 | 1,491,926
Accumulated Amortization | (659,955) | (591,417)
Net | 874,114 | 900,509
Technology |  |
Other intangible assets |  |
Gross | 141,716 | 129,626
Accumulated Amortization | (107,312) | (101,655)
Net | 34,404 | 27,971
Backlog |  |
Other intangible assets |  |
Gross | 15,441 | 15,236
Accumulated Amortization | (13,903) | (12,512)
Net | 1,538 | 2,724
Trademarks and trade names |  |
Other intangible assets |  |
Gross | 12,835 | 12,617
Accumulated Amortization | (5,021) | (4,410)
Net | 7,814 | 8,207
Other |  |
Other intangible assets |  |
Gross | 38,079 | 37,985
Accumulated Amortization | (26,059) | (22,121)
Net | $ 12,020 | $ 15,864

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