Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
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Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2023 |
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| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | |||
| Net change in unrealized appreciation (depreciation) on investment transactions | $ 4,859 | $ 14,328 | $ 2,732 |
| Level 3 | |||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | |||
| Net change in unrealized appreciation (depreciation) on investment transactions | $ 24,372 | $ 19,012 | $ 2,721 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, before tax, of unrealized gain (loss) on investment, derivative, and foreign currency transaction on investment and derivative from change in market price, classified as operating. Investment includes, but is not limited to, debt and equity securities, security sold short, real estate, and commodity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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