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Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Revenue from External Customer [Line Items] |  |  |  |
Managed service contracts, right to refund, period |  |  | 30 days |
Total sales | $ 13,105 | $ 17,708 | $ 42,186 | $ 49,321
Product |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 7,845 | 12,934 | 27,708 | 36,141
Total sales | 7,845 | 12,934 | 27,710 | 36,143
Service |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 5,260 | 4,774 | 14,476 | 13,178
Total sales | 5,260 | 4,774 | 14,476 | 13,178
Finance |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Finance |  |  | 2 | 2
HPP |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total sales | 579 | 1,335 | 3,793 | 5,300
HPP | Product |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 20 | 996 | 2,535 | 4,130
Total sales | 20 | 996 | 2,535 | 4,130
HPP | Service |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 559 | 339 | 1,258 | 1,170
Total sales | 559 | 339 | 1,258 | 1,170
HPP | Finance |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Finance |  |  | 0 | 0
TS |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total sales | 12,526 | 16,373 | 38,393 | 44,021
TS | U.K.. |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total sales | 179 | 206 | 681 | 751
TS | UNITED STATES |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total sales | 12,347 | 16,167 | 37,712 | 43,270
TS | Product |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 7,825 | 11,938 | 25,173 | 32,011
Total sales | 7,825 | 11,938 | 25,175 | 32,013
TS | Product | U.K.. |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 124 | 141 | 497 | 507
Total sales | 124 | 141 | 497 | 507
TS | Product | UNITED STATES |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 7,701 | 11,797 | 24,676 | 31,504
Total sales | 7,701 | 11,797 | 24,678 | 31,506
TS | Service |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 4,701 | 4,435 | 13,218 | 12,008
Total sales | 4,701 | 4,435 | 13,218 | 12,008
TS | Service | U.K.. |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 55 | 65 | 184 | 244
Total sales | 55 | 65 | 184 | 244
TS | Service | UNITED STATES |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Sales | 4,646 | 4,370 | 13,034 | 11,764
Total sales | $ 4,646 | $ 4,370 | 13,034 | 11,764
TS | Finance |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Finance |  |  | 2 | 2
TS | Finance | U.K.. |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Finance |  |  | 0 | 0
TS | Finance | UNITED STATES |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Finance |  |  | $ 2 | $ 2

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