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IMPACT OF THE HURRICANES IRMA AND MARIA (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
IMPACT OF THE HURRICANES IRMA AND MARIA |  |  |  |  |  |  |  |  |  |  |
Pre-tax loss | $ (41,196) | $ 21,860 | $ (13,505) | $ (14,712) | $ (7,590) | $ (21,296) | $ (1,059) | $ (15,429) | $ (47,553) | $ (45,374) | $ (56,201)
Consolidated operating loss | (41,357) | $ 19,525 | $ (15,843) | $ (17,793) | $ (9,911) | $ (22,081) | $ (1,912) | $ (15,893) | (55,468) | $ (49,797) | $ (78,595)
Loss on damaged assets from Hurricanes |  |  |  |  |  |  |  |  | 35,443 |  |
Insurance proceeds |  |  |  |  |  |  |  |  | 34,606 |  |
HURRICANES IRMA AND MARIA |  |  |  |  |  |  |  |  |  |  |
IMPACT OF THE HURRICANES IRMA AND MARIA |  |  |  |  |  |  |  |  |  |  |
Pre-tax loss |  |  |  |  |  |  |  |  | 4,000 |  |
Loss on damaged assets from Hurricanes |  |  |  |  |  |  |  |  | 35,400 |  |
Insurance proceeds |  |  |  |  |  |  |  |  | 34,600 |  |
Additional operating expenses |  |  |  |  |  |  |  |  | $ 3,200 |  |
Discounted rate used for cash flows |  |  |  |  |  |  |  |  | 14.50% |  |
Impairment of goodwill and intangible assets |  |  |  |  |  |  |  |  | $ 0 |  |
International Telecom segment | HURRICANES IRMA AND MARIA |  |  |  |  |  |  |  |  |  |  |
IMPACT OF THE HURRICANES IRMA AND MARIA |  |  |  |  |  |  |  |  |  |  |
Service credit | $ 19,300 |  |  |  |  |  |  |  |  |  |

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