Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Revenue from External Customer [Line Items]
Managed service contracts, right to refund, period			30 days
Total sales	$ 13,269	$ 11,981	$ 31,613	$ 24,350
Product
Revenue from External Customer [Line Items]
Sales	8,987	8,216	23,207	16,936
Total sales	8,988	8,217	23,209	16,937
Service
Revenue from External Customer [Line Items]
Sales	4,281	3,764	8,404	7,413
Total sales	4,281	3,764	8,404	7,413
Finance
Revenue from External Customer [Line Items]
Finance	1	1	2	1
HPP
Revenue from External Customer [Line Items]
Total sales	1,476	1,143	3,965	2,207
HPP \| Product
Revenue from External Customer [Line Items]
Sales	972	962	3,134	1,682
Total sales	972	962	3,134	1,682
HPP \| Service
Revenue from External Customer [Line Items]
Sales	504	181	831	525
Total sales	504	181	831	525
HPP \| Finance
Revenue from External Customer [Line Items]
Finance	0	0	0
TS
Revenue from External Customer [Line Items]
Total sales	11,793	10,838	27,648	22,143
TS \| U.K..
Revenue from External Customer [Line Items]
Total sales	267	316	545	471
TS \| UNITED STATES
Revenue from External Customer [Line Items]
Total sales	11,526	10,522	27,103	21,672
TS \| Product
Revenue from External Customer [Line Items]
Sales	8,015	7,254	20,073	15,254
Total sales	8,016	7,255	20,075	15,255
TS \| Product \| U.K..
Revenue from External Customer [Line Items]
Sales	175	212	366	274
Total sales	175	212	366	274
TS \| Product \| UNITED STATES
Revenue from External Customer [Line Items]
Sales	7,840	7,042	19,707	14,980
Total sales	7,841	7,043	19,709	14,981
TS \| Service
Revenue from External Customer [Line Items]
Sales	3,777	3,583	7,573	6,888
Total sales	3,777	3,583	7,573	6,888
TS \| Service \| U.K..
Revenue from External Customer [Line Items]
Sales	92	104	179	197
Total sales	92	104	179	197
TS \| Service \| UNITED STATES
Revenue from External Customer [Line Items]
Sales	3,685	3,479	7,394	6,691
Total sales	3,685	3,479	7,394	6,691
TS \| Finance
Revenue from External Customer [Line Items]
Finance	1	1	2	1
TS \| Finance \| U.K..
Revenue from External Customer [Line Items]
Finance	0	0	0
TS \| Finance \| UNITED STATES
Revenue from External Customer [Line Items]
Finance	$ 1	$ 1	$ 2	$ 1

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