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Income Taxes - Summary of Reconciliation of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Income taxes computed at the federal statutory rate	$ (3,780)	$ (6,744)
Change in valuation allowance	2,867	3,466
Nondeductible compensation, interest expense and other	(898)	956
State income taxes, net of federal tax benefit	(583)	(334)
Change in R&D credit carryover	(407)	(379)
NOL expirations and other prior year true-ups	2,725	3,051
Foreign rate differential	195	104
Tax impacts of Evertel acquisition accounting	(0)	(525)
Provision (benefit) for income taxes	$ 119	$ (405)

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