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Goodwill, Identifiable Intangible Assets, And Other Long-Lived Assets - Schedule of Finite-lived and Indefinite-lived Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items] |  |
Accumulated Amortization | $ (673,735) | $ (606,592)
Total | 345,694 |
Trade names (indefinite-lived), Accumulated Impairment Charge | (58,933) | (58,933)
Gross Carrying Amount, Trade names (indefinite-lived) | 299,271 | 289,121
Total, Trade names (indefinite-lived) | 240,338 | 230,188
Gross Carrying Amount, Total | 1,323,534 | 1,264,334
Accumulated Impairment Charge, Total | (63,767) | (63,767)
Total | 586,032 | 593,975
Customer relationships |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 807,766 | 762,516
Accumulated Amortization | (482,594) | (427,211)
Accumulated Impairment Charge | (4,834) | (4,834)
Total | 320,338 | 330,471
Developed technology/Vendor network |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 95,661 | 95,661
Accumulated Amortization | (78,788) | (74,238)
Accumulated Impairment Charge | 0 | 0
Total | 16,873 | 21,423
Trade names (finite-lived) |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 35,991 | 33,791
Accumulated Amortization | (27,800) | (25,690)
Accumulated Impairment Charge | 0 | 0
Total | 8,191 | 8,101
Contract backlog |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 84,845 | 83,245
Accumulated Amortization | (84,553) | (79,453)
Accumulated Impairment Charge | 0 | 0
Total | $ 292 | $ 3,792

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