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Goodwill And Intangiable Assets - Components of Intangible Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Sep. 30, 2021
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Cost | $ 998,735 | $ 1,021,879
Accumulated Amortization | 193,831 | 142,711
Intangible Assets, Net | 804,904 | 879,168
Customer contracts and relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 905,285 | 928,069
Accumulated Amortization | 175,349 | 131,081
Intangible Assets, Net | 729,936 | 796,988
VES Provider network |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 57,000 | 57,000
Accumulated Amortization | 6,333 | 1,583
Intangible Assets, Net | 50,667 | 55,417
Technology-based intangible assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 31,984 | 32,307
Accumulated Amortization | 7,683 | 5,544
Intangible Assets, Net | 24,301 | 26,763
Trademarks and trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 4,466 | 4,503
Accumulated Amortization | 4,466 | 4,503
Intangible Assets, Net | $ 0 | $ 0

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