Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 10,892	$ 10,889
Finite-lived intangible assets, accumulated amortization	(5,573)	(4,886)
Finite-lived intangible assets, impairment	(3,894)	0
Total	1,425	6,003
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	8,396	8,396
Finite-lived intangible assets, accumulated amortization	(4,021)	(3,548)
Finite-lived intangible assets, impairment	(3,894)	0
Total	481	4,848
Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,122	2,119
Finite-lived intangible assets, accumulated amortization	(1,178)	(966)
Finite-lived intangible assets, impairment	0	0
Total	944	1,153
Noncompete Agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	374	374
Finite-lived intangible assets, accumulated amortization	(374)	(372)
Finite-lived intangible assets, impairment	0	0
Total	$ 0	$ 2