Term Loans and Warrant Liabilities - Summary of Changes in Fair Value of Term Loan and First Amendment Term Loan Level 3 (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in fair value related to credit risk in other comprehensive income	$ 820	$ 0
First Amendment Term Loan [Member] \| Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance	0
Transfer in	4,480
Change in fair value related to non-credit risk recorded within net loss	$ 430
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other income, net
Balance	$ 4,910	0
Close Date Term Loan [Member] \| Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance	12,010	0
Transfer in	0	11,575
Change in fair value related to non-credit risk recorded within net loss	$ 1,910	$ 435
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other income, net	Other income, net
Change in fair value related to credit risk in other comprehensive income	$ (820)	$ 0
Balance	$ 13,100	$ 12,010

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.

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