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Income Taxes - Summary of Reconciliation of Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023
Income Tax Disclosure [Abstract] |  |
Income taxes computed at the federal statutory rate | $ (6,744) | $ (2,309)
Change in valuation allowance | 3,466 | 10,376
Nondeductible compensation, interest expense and other | 956 | 232
State income taxes, net of federal tax benefit | (334) | (605)
Change in R&D credit carryover | (379) | (433)
NOL expirations and other prior year true-ups | 3,051 | 111
Foreign rate differential | 104 | 28
Tax impacts of Evertel acquisition accounting | (525) | 0
Provision (benefit) for income taxes | $ (405) | $ 7,400

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