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v3.23.1

Revenue Recognition - Additional Information (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2023 USD ($) Customer | Dec. 31, 2022 | Mar. 31, 2022 USD ($) Customer | Mar. 31, 2023 USD ($) Customer | Mar. 31, 2022 USD ($) Customer | Sep. 30, 2022 USD ($)
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Revenues | $ 68,393,000 |  | $ 86,280,000 | $ 152,051,000 | $ 180,706,000 |
Minimum purchase commitment deals of revenue |  |  | 19,900,000 |  | 40,100,000 |
Distribution period |  |  |  | 5 years |  |
Contract acquisition costs | 8,400,000 |  |  |  |  | $ 8,300,000
Contract acquisition cost, amortization | 800,000 |  | 500,000 | $ 1,600,000 | 1,100,000 |
Contract acquisition cost, impairment |  |  |  | 0 |  |
Capitalized contract cost, amortization | 2,500,000 |  | 2,700,000 | 5,200,000 | 5,500,000 |
Capitalized contract cost, impairment |  |  |  | 0 |  |
Customer One |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Revenues | 10,800,000 |  | 21,900,000 | 22,400,000 | 46,200,000 |
Customer Two |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Revenues | 7,200,000 |  | 10,200,000 | 20,800,000 | 28,100,000 |
United States |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Revenues | 21,742,000 |  | 21,955,000 | 43,098,000 | 57,084,000 |
Germany |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Revenues | 24,627,000 |  | 23,131,000 | 42,791,000 | 42,640,000 |
Japan |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Revenues | 5,738,000 |  | $ 25,413,000 | 31,579,000 | $ 51,489,000 |
China |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Revenues | $ 7,000,000.0 |  |  | $ 16,700,000 |  |
Revenues | Customer Concentration Risk |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Number of customers accounted for revenues | Customer | 2 |  | 2 | 2 | 2 |
Revenues | Customer Concentration Risk | Customer One |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Percentage of revenue | 15.80% |  | 25.40% | 14.70% | 25.50% |
Revenues | Customer Concentration Risk | Customer Two |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Percentage of revenue | 10.50% |  | 11.80% | 13.70% | 15.60% |
Minimum |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Connected services contract term |  |  |  | 1 year |  |
Contract acquisition cost, deferred and amortized over benefit period |  |  |  | 1 year |  |
Contract term | 1 year |  |  | 1 year |  |
Minimum | Revenues | China | Geographic Concentration Risk |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Percentage of revenue |  | 10.00% |  |  |  |
Maximum |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |
Connected services contract term |  |  |  | 5 years |  |
Contract acquisition costs, expected benefit period |  |  |  | 1 year |  |
Contract acquisition cost, deferred and amortized over benefit period |  |  |  | 8 years |  |
Contract term | 8 years |  |  | 8 years |  |

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