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Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income tax benefit at statutory federal rate	$ (9,975)	$ (10,000)	$ (7,934)
Foreign income taxed at other rates		(170)	(353)
Permanent differences relating to stock based compensation	(601)	(714)	(4,379)
Permanent differences relating to GILTI inclusion	165
Permanent differences relating to Section 162(m)			816
Other permanent differences	273		741
Adjustment to tax assets based on Section 382			3,330
Research and development credits, net	(37)	232	1,042
State and local taxes	(4,122)	(4,975)	(7,022)
Adjustment to true up to prior years' tax provision	206	24	48
Effect of change in statutory tax rates			216
State minimum and excise taxes		358	268
Change in valuation allowances	14,098	15,603	13,495
Income tax expense	$ 7	$ 358	$ 268

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