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Intangible Assets (Tables) | 6 Months Ended
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Mar. 31, 2023
Goodwill And Intangible Assets Disclosure [Abstract] |
Information About Intangible Assets | Information about our intangible assets as of March 31, 2023 and September 30, 2022, is as follows (in thousands):
|  | March 31, |  |  | September 30, |
|  | 2023 |  |  | 2022 |
Customer relationship |  |  | — |  |  | $ | 43,800 |
Accumulated amortization |  |  | — |  |  |  | (38,029 | )
Impairment |  |  | — |  |  |  | (1,929 | )
Net carrying value |  | $ | — |  |  | $ | 3,842 |

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