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Summary of Operations and Significant Accounting Policies - Cash and Cash Equivalents - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Concentration Risk [Line Items] |  |
Percentage of cash balances | 66.00% | 56.00%
Investment, Type [Extensible Enumeration] | U S Treasuries And F D I C Insured [Member] | U S Treasuries And F D I C Insured [Member]
Amtech's |  |
Concentration Risk [Line Items] |  |
Cash Insured Limits | $ 5.7 | $ 6.0

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