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v3.23.3

Summary of Operations and Significant Accounting Policies - Cash and cash Equivalents - Additional Information (Details) | 12 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022
Concentration Risk [Line Items] |  |
Percentage of cash balances | 56.00% | 84.00%
Investment, Type [Extensible Enumeration] | U S Treasuries And F D I C Insured [Member] | U S Treasuries And F D I C Insured [Member]

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