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Income Taxes - Summary of Significant Portion of Net Deferred Tax Asset (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 13,070	$ 12,357
Research and development credit	4,242	4,639
Share-based compensation	543	562
Patents	1,859	1,770
Accruals and other	2,621	2,227
Capitalized R&E expenses	5,257	3,893
Allowances	327	199
Gross deferred tax assets	27,919	25,647
Equipment	(144)	(216)
Operating ROU assets	(517)	(619)
Acquired intangible assets	(1,171)	(1,592)
Gross deferred tax liabilities	(1,832)	(2,427)
Less valuation allowance	(26,087)	(23,220)
Net deferred tax assets and liabilities	$ 0	$ 0

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