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GOODWILL AND INTANGIBLE ASSETS (Tables) | 6 Months Ended
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Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The following is a summary of changes in goodwill (in thousands):
Balance at September 30, 2019 | $ | 82,786 |
Additions | 1,200 |
Impairment | (38,333 | )
Balance at March 31, 2020 | $ | 45,653 |
Intangible Assets Arising from Business Acquisitions | Intangible assets consisted of the following:
|  |  | March 31, 2020 |  | September 30, 2019
(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 |  |  | $ | 13,331 |  |  | $ | 75,765 |  |  | $ | 89,096 |  |  | $ | 10,256 |  |  | $ | 78,840 |
Intellectual property | 13 years |  | 1,500 |  |  | 47 |  |  | 1,453 |  |  | — |  |  | — |  |  | — |
Trade name | 20 years |  | 5,865 |  |  | 683 |  |  | 5,182 |  |  | 5,865 |  |  | 522 |  |  | 5,343 |
Customer relationships | 5 years |  | 4,000 |  |  | 1,867 |  |  | 2,133 |  |  | 4,000 |  |  | 1,467 |  |  | 2,533 |
|  |  | $ | 100,461 |  |  | $ | 15,928 |  |  | $ | 84,533 |  |  | $ | 98,961 |  |  | $ | 12,245 |  |  | $ | 86,716 |

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