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ACQUISITIONS AND DISPOSITIONS - Purchase Price Allocation - US Telecom (Details) - USD ($) $ in Thousands | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Jul. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Purchase price allocation: |  |  |  |
Goodwill |  | $ 63,970 | $ 62,873 | $ 45,077
U.S. Telecom |  |  |  |
Consideration Transferred |  |  |  |
Cash consideration | $ 9,100 |  |  |
Purchase price allocation: |  |  |  |
Property, plant and equipment | 10,200 |  |  |
Deferred tax liabilities | 3,500 |  |  |
Other long term liabilities | 700 |  |  |
Goodwill | $ 3,100 |  |  |

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