Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,488	$ 2,088
Accumulated Amortization	(1,630)	(1,479)
Net Carrying Amount	858	609
Customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,609	1,219
Customer lists | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	6 years
Customer lists | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 879	$ 869
Trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	3 years
Trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	15 years