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Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | All goodwill is attributed to the Midstream reportable segment. Changes in the carrying amount of goodwill consist of the following activity:
December 31, 2017 | $ | — |
Acquisitions | 796,359 |
June 30, 2018 | $ | 796,359 |
Schedule of Finite-Lived Intangible Assets | The carrying amount and accumulated amortization of other intangible assets consist of the following:
| June 30, 2018
Other Intangible Assets |
Customer Relationships | $ | 128,781 |
Less: Impairment of Other Intangible Assets | (18,650 | )
Less: Accumulated Amortization for Customer Relationships | (3,655 | )
Total Other Intangible Assets, net | $ | 106,476 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | The estimated future annual amortization expense for the next five fiscal years for other intangible assets recorded at June 30, 2018 is as follows:
| 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023
Estimated Annual Amortization Expense | $ | 6,552 |  |  | $ | 6,552 |  |  | $ | 6,552 |  |  | $ | 6,552 |  |  | $ | 6,552 |

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