Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,088	$ 7,403
Accumulated Amortization	(958)	(3,908)
Net Carrying Amount	1,130	3,495
Customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,219	2,471
Accumulated Amortization	(745)	(1,521)
Net Carrying Amount	$ 474	950
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
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 0	3,386
Accumulated Amortization	0	(2,024)
Net Carrying Amount	$ 0	1,362
Technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	5 years
Technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 869	1,468
Accumulated Amortization	(213)	(285)
Net Carrying Amount	$ 656	1,183
Trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years
Trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	15 years
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 0	78
Accumulated Amortization	0	(78)
Net Carrying Amount	$ 0	$ 0
Other | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	2 years
Other | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years