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Summary of Significant Accounting Policies - Contract Assets and Liabilities (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021
Capitalized Contract Cost [Line Items] |  |
Current contract assets | $ 4,400,000 | $ 2,700,000
Non-current contract assets | 0 |
Current contract liabilities | 1,900,000 | 900,000
Non-current contract liabilities |  | 400,000
Revenue recognized included in contract liabilities | $ 1,700,000 |
Practical Expedient, Incremental Costs | true |
Current capitalized costs | $ 128,000 | 137,000
Non-current capitalized costs | 0 |
Incremental costs amortized | 366,000 | 442,000
Impairment related to costs capitalized | $ 0 | 0
Payment terms | 30 days |
Remaining Performance Obligation, Optional Exemption | true |
Minimum |  |
Capitalized Contract Cost [Line Items] |  |
Amortization Period | 3 years |
Maximum |  |
Capitalized Contract Cost [Line Items] |  |
Amortization Period | 6 years |
TS |  |
Capitalized Contract Cost [Line Items] |  |
Current capitalized costs | $ 9,000 | 13,000
Non-current capitalized costs | 0 | 9,000
Incremental costs amortized | 13,000 | 13,000
Impairment related to costs capitalized | $ 0 | $ 0
Europe | Maximum |  |
Capitalized Contract Cost [Line Items] |  |
Payment terms | 90 days |

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