Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Gross	$ 10,518	$ 10,892
Accumulated Amortization	(5,278)	(5,573)
Impairment	(3,894)	(3,894)
Net	1,346	1,425
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	8,396	8,396
Accumulated Amortization	(4,061)	(4,021)
Impairment	(3,894)	(3,894)
Net	$ 441	481
Useful life	10 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross	$ 2,122	2,122
Accumulated Amortization	(1,217)	(1,178)
Impairment	0	0
Net	$ 905	944
Useful life	10 years
Noncompete agreements
Finite-Lived Intangible Assets [Line Items]
Gross		374
Accumulated Amortization		(374)
Impairment		0
Net		$ 0
Useful life		3 years