Income and Other Taxes - Schedule of Income Tax (Benefit) Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Current federal tax expense (benefit)	$ (125)	$ 0
Deferred federal income tax expense (benefit)	12	0
Total federal income tax expense (benefit)	(113)	0
Current state tax expense (benefit)	(37)	990
Deferred state tax expense (benefit)	11	0
Total state income tax expense (benefit)	(26)	990
Current foreign tax expense (benefit)	0	(418)
Deferred foreign tax expense (benefit)	0	0
Total foreign income tax expense (benefit)	0	(418)
Total income tax (benefit) expense	$ (139)	$ 572