Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Revenue from External Customer [Line Items]
Managed service contracts, right to refund, period			30 days
Total sales	$ 13,706	$ 13,269	$ 29,081	$ 31,613
Product
Revenue from External Customer [Line Items]
Sales	8,458	8,987	19,864	23,207
Total sales	8,458	8,988	19,865	23,209
Service
Revenue from External Customer [Line Items]
Sales	5,248	4,281	9,216	8,404
Total sales	5,248	4,281	9,216	8,404
Finance
Revenue from External Customer [Line Items]
Finance		1	1	2
HPP
Revenue from External Customer [Line Items]
Total sales	2,502	1,476	3,214	3,965
HPP \| Product
Revenue from External Customer [Line Items]
Sales	2,043	972	2,515	3,134
Total sales	2,043	972	2,515	3,134
HPP \| Service
Revenue from External Customer [Line Items]
Sales	459	504	699	831
Total sales	459	504	699	831
HPP \| Finance
Revenue from External Customer [Line Items]
Finance		0	0	0
TS
Revenue from External Customer [Line Items]
Total sales	11,204	11,793	25,867	27,648
TS \| U.K..
Revenue from External Customer [Line Items]
Total sales	121	267	502	545
TS \| UNITED STATES
Revenue from External Customer [Line Items]
Total sales	11,083	11,526	25,365	27,103
TS \| Product
Revenue from External Customer [Line Items]
Sales	6,415	8,015	17,349	20,073
Total sales	6,415	8,016	17,350	20,075
TS \| Product \| U.K..
Revenue from External Customer [Line Items]
Sales	61	175	373	366
Total sales	61	175	373	366
TS \| Product \| UNITED STATES
Revenue from External Customer [Line Items]
Sales	6,354	7,840	16,976	19,707
Total sales	6,354	7,841	16,977	19,709
TS \| Service
Revenue from External Customer [Line Items]
Sales	4,789	3,777	8,517	7,573
Total sales	4,789	3,777	8,517	7,573
TS \| Service \| U.K..
Revenue from External Customer [Line Items]
Sales	60	92	129	179
Total sales	60	92	129	179
TS \| Service \| UNITED STATES
Revenue from External Customer [Line Items]
Sales	4,729	3,685	8,388	7,394
Total sales	$ 4,729	3,685	8,388	7,394
TS \| Finance
Revenue from External Customer [Line Items]
Finance		1	1	2
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

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