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Goodwill and Intangible Assets | 3 Months Ended
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Mar. 31, 2020
Goodwill and Intangible Assets |
Goodwill and Intangible Assets | (5) Goodwill and Intangibles The Company evaluates goodwill for impairment annually during the fourth quarter and whenever events or changes in circumstances indicate it is more likely than not that the fair value of a reporting unit with goodwill is less than its carrying amount. Significant assumptions used to estimate the reporting units’ fair value include the discount rate as well as estimates of future cash flows, which are impacted primarily by commodity prices and producer customers’ development plans (which impact volumes and capital requirements). During the third quarter of 2019, the Company incurred impairment charges to the goodwill and customer relationships intangible asset associated with the Clearwater Facility, which is in the water handling segment. See Note 4—Clearwater Facility Idling. During the fourth quarter of 2019, the Company incurred impairment charges of $298 million to its fresh water delivery and services reporting unit, which is in the water handling segment. This was primarily due to decreased water volumes driven by decreased drilling and increased use of water blending operations by Antero Resources. There was no goodwill remaining in this segment after this impairment was incurred. During the first quarter of 2020, the Company performed an interim impairment analysis of the goodwill due to changes in Antero Resources’ drilling plans as a result of the decline in commodity prices. As a result of this evaluation, the Company impaired all remaining goodwill of $575 million associated with its gathering and processing segment for the three months ended March 31, 2020. All customer relationships are subject to amortization and will be amortized over a weighted-average period of 23 years, which reflects the remaining economic life of the relationships. The changes in the carrying amount of customer relationships for the three months ended March 31, 2020 were as follows (in thousands):
​ | ​ | ​ | ​ | ​
Customer relationships as of December 31, 2019 |  | $ | 1,498,119 | ​
Accumulated amortization | ​ | ​ | (17,605) | ​
Customer relationships as of March 31, 2020 | ​ | $ | 1,480,514 | ​
​ Future amortization expense is as follows (in thousands):
​ | ​ | ​ | ​ | ​
Remainder of year ending December 31, 2020 |  | $ | 53,069 | ​
Year ending December 31, 2021 | ​ | ​ | 70,672 | ​
Year ending December 31, 2022 | ​ | ​ | 70,672 | ​
Year ending December 31, 2023 | ​ | ​ | 70,672 | ​
Year ending December 31, 2024 | ​ | ​ | 70,672 | ​
Year ending December 31, 2025 | ​ | ​ | 70,672 | ​
Thereafter | ​ | ​ | 1,074,085 | ​
Total | ​ | $ | 1,480,514 | ​
​

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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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