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GOODWILL AND INTANGIBLE ASSETS | 12 Months Ended
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Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
GOODWILL AND INTANGIBLE ASSETS | NOTE 6 GOODWILL AND INTANGIBLE ASSETS Goodwill All of our goodwill is within our H&P Technologies reportable segment. The following is a summary of changes in goodwill (in thousands):
September 30, 2017 | $ | 51,705 |
Additions | 17,791 |
Impairment | (4,719 | )
September 30, 2018 | 64,777 |
Additions | 18,009 |
September 30, 2019 | $ | 82,786 |
Intangible Assets Intangible assets arising from business acquisitions consisted of the following:
|  |  | September 30, 2019 |  | September 30, 2018
(in thousands) | Weighted Average Estimated Useful Lives |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net
Finite-lived intangible asset: |  |  |  |  |  |  |  |  |  |  |  |  |
Developed technology | 15 years |  | $ | 89,096 |  |  | $ | 10,256 |  |  | $ | 78,840 |  |  | $ | 70,000 |  |  | $ | 5,589 |  |  | $ | 64,411 |
Trade name | 20 years |  | 5,865 |  |  | 522 |  |  | 5,343 |  |  | 5,700 |  |  | 237 |  |  | 5,463 |
Customer relationships | 5 years |  | 4,000 |  |  | 1,467 |  |  | 2,533 |  |  | 4,000 |  |  | 667 |  |  | 3,333 |
|  |  | $ | 98,961 |  |  | $ | 12,245 |  |  | $ | 86,716 |  |  | $ | 79,700 |  |  | $ | 6,493 |  |  | $ | 73,207 |
Amortization expense in the Consolidated Statements of Operations was $5.8 million, $5.4 million and $1.1 million for fiscal years 2019, 2018 and 2017, respectively, and is estimated to be $7.0 million for each of the next three succeeding fiscal years, approximately $6.4 million for fiscal year 2023 and approximately $6.2 million for fiscal year 2024. Impairments During the fourth quarter of fiscal year 2018, and as part of our annual goodwill impairment test, we performed a detailed assessment of the TerraVici reporting unit, where $4.7 million of goodwill was allocated. We determined that the estimated fair value of this reporting unit was less than its carrying amount and we recorded goodwill impairment losses of $4.7 million ($3.5 million, net of tax, or $0.03 per diluted share). In addition, we recorded an intangible assets impairment loss of $0.9 million ($0.7 million net of tax, or $0.01 per diluted share). These impairment losses are included in Asset Impairment Charge on the Consolidated Statements of Operations for the fiscal year ended September 30, 2018. Our goodwill impairment analysis performed on our remaining technology reporting units in the fourth quarter of fiscal year 2018 did not result in an impairment charge. Beginning October 1, 2018, the goodwill associated with our technology reporting units were combined into one reporting unit, H&P Technologies. Our goodwill impairment analysis performed in the fourth quarter fiscal year of 2019 indicated that the fair value of the H&P Technologies reporting unit exceeded its carrying value. Therefore, no goodwill impairment was recognized.

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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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