Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue from External Customer [Line Items]
Managed service contracts, right to refund, period			30 days
Total sales	$ 13,326	$ 13,721	$ 37,676	$ 39,197
Product
Revenue from External Customer [Line Items]
Sales	8,438	10,140	25,374	29,506
Total sales	8,438	10,142	25,375	29,526
Service
Revenue from External Customer [Line Items]
Sales	4,888	3,579	12,301	9,671
Total sales	4,888	3,579	12,301	9,671
Finance
Revenue from External Customer [Line Items]
Finance	0	2	1	20
High Performance Products Segment
Revenue from External Customer [Line Items]
Total sales	738	958	2,945	3,402
High Performance Products Segment | Product
Revenue from External Customer [Line Items]
Sales	427	602	2,109	2,494
Total sales	427	602	2,109	2,494
High Performance Products Segment | Service
Revenue from External Customer [Line Items]
Sales	311	356	836	908
Total sales	311	356	836	908
High Performance Products Segment | Finance
Revenue from External Customer [Line Items]
Finance	0	0	0	0
Technology Solutions Segment
Revenue from External Customer [Line Items]
Total sales	12,588	12,763	34,731	35,795
Technology Solutions Segment | U.K.
Revenue from External Customer [Line Items]
Total sales	211	213	682	2,034
Technology Solutions Segment | U.S.
Revenue from External Customer [Line Items]
Total sales	12,377	12,550	34,049	33,761
Technology Solutions Segment | Product
Revenue from External Customer [Line Items]
Sales	8,011	9,538	23,265	27,012
Total sales	8,011	9,540	23,266	27,032
Technology Solutions Segment | Product | U.K.
Revenue from External Customer [Line Items]
Sales	128	130	402	1,774
Total sales	128	130	402	1,774
Technology Solutions Segment | Product | U.S.
Revenue from External Customer [Line Items]
Sales	7,883	9,408	22,863	25,238
Total sales	7,883	9,410	22,864	25,258
Technology Solutions Segment | Service
Revenue from External Customer [Line Items]
Sales	4,577	3,223	11,465	8,763
Total sales	4,577	3,223	11,465	8,763
Technology Solutions Segment | Service | U.K.
Revenue from External Customer [Line Items]
Sales	83	83	280	260
Total sales	83	83	280	260
Technology Solutions Segment | Service | U.S.
Revenue from External Customer [Line Items]
Sales	4,494	3,140	11,185	8,503
Total sales	4,494	3,140	11,185	8,503
Technology Solutions Segment | Finance
Revenue from External Customer [Line Items]
Finance	0	2	1	20
Technology Solutions Segment | Finance | U.K.
Revenue from External Customer [Line Items]
Finance	0	0	0	0
Technology Solutions Segment | Finance | U.S.
Revenue from External Customer [Line Items]
Finance	$ 0	$ 2	$ 1	$ 20