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Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019
Goodwill And Other Intangible Assets [Line Items] |  |
Goodwill | $ 4,337 | $ 5,008
Other intangible assets, net | 8,331 | 10,063
Optoseis Technology and Quantum |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Goodwill | 4,337 | 5,008
Total other intangible assets | 11,918 | 11,918
Accumulated amortization | (3,587) | (1,855)
Other intangible assets, net | $ 8,331 | 10,063
Weighted-Average Remaining Useful Lives (in years) | 10 years |
Optoseis Technology and Quantum | Developed Technology |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Total other intangible assets | $ 5,918 | 5,918
Weighted-Average Remaining Useful Lives (in years) | 16 years 10 months 24 days |
Optoseis Technology and Quantum | Customer Relationships |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Total other intangible assets | $ 3,900 | 3,900
Weighted-Average Remaining Useful Lives (in years) | 2 years 10 months 24 days |
Optoseis Technology and Quantum | Trade Names |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Total other intangible assets | $ 1,930 | 1,930
Weighted-Average Remaining Useful Lives (in years) | 3 years 10 months 24 days |
Optoseis Technology and Quantum | Non-compete Agreements |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Total other intangible assets | $ 170 | $ 170
Weighted-Average Remaining Useful Lives (in years) | 3 years |

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