Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Tax Contingency [Line Items]
Additions (reductions) to valuation allowance	$ 1,506,000	$ (3,292,000)
Operating loss carryforwards, annual utilization limits	$ 800,000
Operating loss carryforwards, utilization limit, percent	80.00%
Previous accrual of uncertain tax positions	$ 1,004,000		$ 276,000
Maximum
Income Tax Contingency [Line Items]
Operating loss carry forwards expiration year	2035
Minimum
Income Tax Contingency [Line Items]
Operating loss carry forwards expiration year	2032
Federal
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 9,800,000
Net operating loss carryforwards with indefinite carryforward period	$ 67,200,000
Number of years open for tax examinations	3 years
Foreign Tax Authority
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 0
Tax credit carryforwards	$ 1,300,000
Foreign Tax Authority | Maximum
Income Tax Contingency [Line Items]
Number of years open for tax examinations	5 years
Tax credit carry forwards expiration year	2033
Foreign Tax Authority | Minimum
Income Tax Contingency [Line Items]
Number of years open for tax examinations	3 years
Tax credit carry forwards expiration year	2030
State Jurisdiction
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 16,100,000
State Jurisdiction | Maximum
Income Tax Contingency [Line Items]
Number of years open for tax examinations	5 years
State Jurisdiction | Minimum
Income Tax Contingency [Line Items]
Number of years open for tax examinations	3 years
Research and Development | Federal
Income Tax Contingency [Line Items]
Tax credit carryforwards	$ 300,000
Research and Development | Federal | Maximum
Income Tax Contingency [Line Items]
Tax credit carry forwards expiration year	2043
Research and Development | Federal | Minimum
Income Tax Contingency [Line Items]
Tax credit carry forwards expiration year	2029