Intangible Assets - Carrying Amount (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2017	Sep. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 7,274	$ 8,769
Accumulated Amortization	(5,900)	(6,119)
Total	$ 1,374	2,650
Contract intangibles
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	10 years
Gross Carrying Amount	$ 1,500	1,500
Accumulated Amortization	(535)	(150)
Total	965	1,350
Brand and technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,877	5,749
Accumulated Amortization	(4,877)	(5,018)
Total	0	731
Covenant not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0	700
Accumulated Amortization	0	(533)
Total	0	167
Patent and trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	897	820
Accumulated Amortization	(488)	(418)
Total	$ 409	$ 402
Minimum | Brand and technology
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	3 years
Minimum | Covenant not to compete
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	3 years
Minimum | Patent and trademarks
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	3 years
Maximum | Brand and technology
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	5 years
Maximum | Covenant not to compete
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	5 years
Maximum | Patent and trademarks
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	10 years