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Revenue - Schedule of Disaggregation of Revenue (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2018 USD ($)
Revenue from External Customer [Line Items]
Sales	$ 18,980
Product
Revenue from External Customer [Line Items]
Sales	15,674
Service
Revenue from External Customer [Line Items]
Sales	3,269
Finance
Revenue from External Customer [Line Items]
Sales	37
High Performance Products Segment
Revenue from External Customer [Line Items]
Sales	2,026
High Performance Products Segment | Product
Revenue from External Customer [Line Items]
Sales	1,733
High Performance Products Segment | Service
Revenue from External Customer [Line Items]
Sales	293
High Performance Products Segment | Finance
Revenue from External Customer [Line Items]
Sales	0
United Kingdom
Revenue from External Customer [Line Items]
Sales	1,802
United Kingdom | Product
Revenue from External Customer [Line Items]
Sales	1,732
United Kingdom | Service
Revenue from External Customer [Line Items]
Sales	70
United Kingdom | Finance
Revenue from External Customer [Line Items]
Sales	0
U.S.
Revenue from External Customer [Line Items]
Sales	15,152
U.S. | Product
Revenue from External Customer [Line Items]
Sales	12,209
U.S. | Service
Revenue from External Customer [Line Items]
Sales	2,906
U.S. | Finance
Revenue from External Customer [Line Items]
Sales	37
Total
Revenue from External Customer [Line Items]
Sales	16,954
Total | Product
Revenue from External Customer [Line Items]
Sales	13,941
Total | Service
Revenue from External Customer [Line Items]
Sales	2,976
Total | Finance
Revenue from External Customer [Line Items]
Sales	$ 37

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+ References

No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045

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