Income Taxes - Schedule of Components of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Deferred tax assets:
Net operating loss carryforwards	$ 17,699	$ 17,112
Accruals and reserves	1,983	2,865
Income tax credits	2,163	1,618
Operating lease liabilities	4,150	2,719
Research and development costs	1,531	1,011
Foreign service fee	1,579	1,579
Other assets	878	731
Total deferred tax assets	29,983	27,635
Valuation allowance	(22,658)	(21,506)	$ (20,000)
Deferred tax assets, net of valuation allowance	7,325	6,129
Deferred tax liabilities:
Goodwill and identifiable intangible assets	(1,124)	(1,616)
Property and equipment, net	(1,860)	(1,356)
Operating lease, right-of-use assets	(3,987)	(2,720)
Prepaid assets	(169)	(336)
Total deferred tax liabilities	(7,140)	(6,028)
Total deferred tax assets, net	$ 185	$ 101