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Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2019 | Nov. 30, 2018 | Sep. 30, 2018
Goodwill And Other Intangible Assets [Line Items] |  |  |
Goodwill | $ 5,007 |  | $ 4,343
Other intangible assets, net | 10,497 |  | 8,006
Optoseis Technology |  |  |
Goodwill And Other Intangible Assets [Line Items] |  |  |
Goodwill | 5,007 | $ 700 | 4,343
Total other intangible assets | 11,919 | $ 3,700 | 8,200
Accumulated amortization | (1,422) |  | (194)
Other intangible assets, net | $ 10,497 |  | 8,006
Weighted-Average Remaining Useful Lives (in years) | 10 years 6 months |  |
Optoseis Technology | Developed Technology |  |  |
Goodwill And Other Intangible Assets [Line Items] |  |  |
Total other intangible assets | $ 5,919 |  | 4,200
Weighted-Average Remaining Useful Lives (in years) | 17 years 4 months 24 days |  |
Optoseis Technology | Customer Relationships |  |  |
Goodwill And Other Intangible Assets [Line Items] |  |  |
Total other intangible assets | $ 3,900 |  | 2,500
Weighted-Average Remaining Useful Lives (in years) | 3 years 4 months 24 days |  |
Optoseis Technology | Trade Names |  |  |
Goodwill And Other Intangible Assets [Line Items] |  |  |
Total other intangible assets | $ 1,930 |  | 1,400
Weighted-Average Remaining Useful Lives (in years) | 4 years 6 months |  |
Optoseis Technology | Non-compete Agreements |  |  |
Goodwill And Other Intangible Assets [Line Items] |  |  |
Total other intangible assets | $ 170 |  | $ 100
Weighted-Average Remaining Useful Lives (in years) | 3 years 6 months |  |

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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