Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2022	Sep. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Gross	$ 5,277	$ 5,277
Accumulated Amortization	(4,329)	(4,170)
Net	948	1,107
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	3,155	3,155
Accumulated Amortization	(2,833)	(2,780)
Net	$ 322	$ 375
Useful life	10 years	10 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross	$ 2,122	$ 2,122
Accumulated Amortization	(1,496)	(1,390)
Net	$ 626	$ 732
Useful life	10 years	10 years