Goodwill and Intangible Assets - Intangible Assets by Major Class Subject to Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Components of intangible assets by major class subject to amortization
Original Cost	$ 19,524	$ 21,813
Accumulated Amortization	14,415	12,843
Impairment	0	2,289
Currency Translation	(33)	133
Net Book Value	$ 5,076	$ 6,814
Trade name
Components of intangible assets by major class subject to amortization
Weighted Average Life	8 years	8 years
Original Cost	$ 2,466	$ 2,776
Accumulated Amortization	1,821	1,564
Impairment	0	310
Currency Translation	(4)	19
Net Book Value	$ 641	$ 921
Non-compete agreement
Components of intangible assets by major class subject to amortization
Weighted Average Life	5 years	5 years
Original Cost	$ 1,600	$ 1,600
Accumulated Amortization	1,600	1,584
Impairment	0	0
Currency Translation	0	0
Net Book Value	$ 0	$ 16
Technology asset
Components of intangible assets by major class subject to amortization
Weighted Average Life	5 years	5 years
Original Cost	$ 1,869	$ 1,869
Accumulated Amortization	1,128	749
Impairment	0	0
Currency Translation	(10)	50
Net Book Value	$ 731	$ 1,170
Customer relationships
Components of intangible assets by major class subject to amortization
Weighted Average Life	10 years	10 years
Original Cost	$ 13,589	$ 15,568
Accumulated Amortization	9,866	8,946
Impairment	0	1,979
Currency Translation	(19)	64
Net Book Value	$ 3,704	$ 4,707