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GOODWILL AND INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2018
GOODWILL AND INTANGIBLE ASSETS |
Schedule of changes in the carrying amount of goodwill, by operating segment | The table below disclosed goodwill recorded in each of the Company’s segments and accumulated impairment changes (in thousands):
|  | U.S. |  | International |  | Renewable |  |  |  |
|  | Telecom |  | Telecom |  | Energy |  | Consolidated |
Balance at December 31, 2016 |  | $ | 35,268 |  | $ | 24,326 |  | $ | 3,279 |  | $ | 62,873 |
Acquisitions |  |  | — |  |  | 1,097 |  |  | — |  |  | 1,097 |
Balance at December 31, 2017 |  |  | 35,268 |  |  | 25,423 |  |  | 3,279 |  |  | 63,970 |
Acquisitions |  |  | — |  |  | — |  |  | — |  |  | — |
Balance at December 31, 2018 |  | $ | 35,268 |  | $ | 25,423 |  | $ | 3,279 |  | $ | 63,970 |
|  | U.S. |  | International |  | Renewable |  |  |  |
|  | Telecom |  | Telecom |  | Energy |  | Consolidated |
Balance at December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
Gross |  | $ | 35,268 |  | $ | 25,423 |  | $ | 3,279 |  | $ | 63,970 |
Accumulated Impairment |  |  | — |  |  | — |  |  | — |  |  | — |
Net |  |  | 35,268 |  |  | 25,423 |  |  | 3,279 |  |  | 63,970 |
Balance at December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Gross |  |  | 35,268 |  |  | 25,423 |  |  | 3,279 |  |  | 63,970 |
Accumulated Impairment |  |  | — |  |  | — |  |  | — |  |  | — |
Net |  | $ | 35,268 |  | $ | 25,423 |  | $ | 3,279 |  | $ | 63,970 |
Schedule of changes in the carrying amount of the Company's telecommunications licenses, by operating segment | The changes in the carrying amount of the Company’s telecommunications licenses, by operating segment, for the three years ended December 31, 2018 were as follows (in thousands):
|  | U.S. |  | Int'l |  |  |  |
|  | Telecom |  | Telecom |  | Consolidated |
Balance at December 31, 2016 |  | $ | 24,944 |  | $ | 23,347 |  | $ | 48,291 |
Acquired licenses |  |  | 47,692 |  |  | — |  |  | 47,692 |
Dispositions |  |  | (31) |  |  | — |  |  | (31) |
Balance at December 31, 2017 |  | $ | 72,605 |  | $ | 23,347 |  | $ | 95,952 |
Acquired licenses |  |  | 485 |  |  | — |  |  | 485 |
Dispositions |  |  | (2,750) |  |  | — |  |  | (2,750) |
Balance at December 31, 2018 |  | $ | 70,340 |  | $ | 23,347 |  | $ | 93,687 |
Schedule of future amortization of customer relationships, in Island Wireless segment | Future amortization of customer relationships, in its International Telecom segment, is as follows (in thousands):
|  | Future Amortization |
2019 |  | $ | 1,897 |
2020 |  |  | 1,528 |
2021 |  |  | 1,300 |
2022 |  |  | 1,143 |
2023 |  |  | 828 |
Thereafter |  |  | 2,627 |
Total |  | $ | 9,323 |

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