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Goodwill and Other Intangible Assets | 6 Months Ended
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Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | 8. Goodwill and Other Intangible Assets In connection with the acquisition of all of the intellectual property and related assets of the OptoSeis fiber optic sensing technology business from PGS Americas, Inc. in November 2018, the Company recorded goodwill of $0.7 million and other intangible assets of $3.7 million. As a result of this acquisition and the acquisition of Quantum Technology Sciences (“Quantum”) in July 2018, the Company’s consolidated intangible assets consisted of the following (in thousands):
| Weighted- |  |  |  |  |  |  |  |
| Average |  |  |  |  |  |  |  |
| Remaining Useful |  |  |  |  |  |  |  |
| Lives (in years) |  | March 31, 2019 |  |  | September 30, 2018 |
Goodwill |  |  | $ | 5,059 |  |  | $ | 4,343 |
Other intangible assets: |  |  |  |  |  |  |  |  |
Developed technology | 17.4 |  |  | 5,919 |  |  |  | 4,200 |
Customer relationships | 3.4 |  |  | 3,900 |  |  |  | 2,500 |
Trade names | 4.5 |  |  | 1,930 |  |  |  | 1,400 |
Non-compete agreements | 3.5 |  |  | 170 |  |  |  | 100 |
Total other intangible assets | 10.5 |  |  | 11,919 |  |  |  | 8,200 |
Accumulated amortization |  |  |  | (989 | ) |  |  | (194 | )
|  |  | $ | 10,930 |  |  | $ | 8,006 |
Intangible assets amortization expense was $0.8 million for the six months ended March 31, 2019. The Company had no intangible asset amortization expense for the six months ended March 31, 2018. As of March 31, 2019, future estimated amortization expense of other intangible assets is as follows (in thousands):
For fiscal years ending September 30, |  |  |
2019 | $ | 866 |
2020 |  | 1,732 |
2021 |  | 1,732 |
2022 |  | 1,624 |
2023 |  | 714 |
Thereafter |  | 4,262 |
| $ | 10,930 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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