Goodwill And Intangible Assets (Other Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 21,306	$ 21,069
Accumulated Amortization	12,704	11,772
Net Carrying Amount	8,602	9,297
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,108	16,982
Accumulated Amortization	11,237	10,436
Net Carrying Amount	5,871	6,546
Trademarks And Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	133	133
Net Carrying Amount	133	133
Licenses And Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,508	3,397
Accumulated Amortization	910	779
Net Carrying Amount	2,598	2,618
Other Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	557	557
Accumulated Amortization	$ 557	$ 557