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Stockholders' Equity - Schedule of Stock-based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation | $ 6,253 | $ 14,710 | $ 23,020 | $ 42,179
Cost of Connected Services |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation | 97 | 165 | 440 | 937
Cost of Professional Services |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation | 625 | 1,543 | 2,944 | 4,008
Research and Development |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation | 2,531 | 4,774 | 8,672 | 13,377
Sales and Marketing |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation | 1,239 | 2,774 | 2,083 | 8,351
General and Administrative |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation | $ 1,761 | $ 5,454 | 4,881 | $ 15,506
Restructuring and Other Costs, Net |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Stock-based compensation |  |  | $ 4,000 |

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