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Investments, Debt and Equity Securities (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract] |  |  |
Debt Securities, Trading, Unrealized Gain (Loss) | $ 33 | $ 119 |
Unrealized Gain (Loss) on Investments | 2,271 | $ 119 |
Marketable Securities [Line Items] |  |  |
Equity Securities, FV-NI | 49,570 |  | $ 31,639
Debt Securities, Trading | 3,397 |  | 3,364
Marketable Securities, Current | $ 52,967 |  | $ 35,003

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