Income and Other Taxes - Schedule of Income Tax (Benefit) Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Current federal tax expense (benefit)	$ 0	$ (125)
Deferred federal income tax expense (benefit)	(12)	12
Total federal income tax expense (benefit)	(12)	(113)
Current state tax expense (benefit)	65	(37)
Deferred state tax expense (benefit)	(11)	11
Total state income tax expense (benefit)	54	(26)
Current foreign tax expense (benefit)	0	0
Deferred foreign tax expense (benefit)	0	0
Total income tax expense (benefit)	$ 42	$ (139)