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SEGMENT REPORTING (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) segment | Dec. 31, 2014 USD ($)
Segment reporting |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | segment |  |  |  |  |  |  |  |  |  | 5 |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 128,531 | $ 138,795 | $ 99,991 | $ 89,686 | $ 82,916 | $ 96,782 | $ 90,326 | $ 85,345 | $ 457,003 | $ 355,369 | $ 336,347
Depreciation and amortization |  |  |  |  |  |  |  |  | 75,980 | 56,890 | 51,234
Non-cash stock-based compensation |  |  |  |  |  |  |  |  | 6,410 | 4,975 | 4,323
Operating income (loss) | 9,911 | $ 22,081 | $ 1,912 | $ 15,893 | 8,181 | $ 22,524 | $ 28,732 | $ 19,158 | 49,797 | 78,595 | 85,576
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 647,712 |  |  |  | 373,503 |  |  |  | 647,712 | 373,503 |
Goodwill | 62,873 |  |  |  | 45,077 |  |  |  | 62,873 | 45,077 |
Long Lived Assets | 1,198,218 |  |  |  | 945,004 |  |  |  | 1,198,218 | 945,004 |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 124,282 | 64,753 | 58,300
Wireless |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 228,798 | 237,042 | 241,690
Wireline |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 188,019 | 86,485 | 85,284
Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 18,578 | 10,802 | 9,373
Renewable energy |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 21,608 | 21,040 |
U.S |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 198,300 | 204,024 | 180,841
Guyana |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 91,653 | 88,894 | 86,931
U.S Virgin Islands |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 58,431 | 11,542 | 11,583
Bermuda |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 83,006 | 45,745 | 46,917
Other Foreign Countries |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 25,613 | 5,164 | 10,075
Reconciling Items |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 6,030 | 4,948 | 3,980
Non-cash stock-based compensation |  |  |  |  |  |  |  |  | 6,274 | 4,708 | 4,323
Operating income (loss) |  |  |  |  |  |  |  |  | (34,471) | (30,784) | (26,399)
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 15,429 |  |  |  | 14,085 |  |  |  | 15,429 | 14,085 |
Long Lived Assets | 170,505 |  |  |  | 315,739 |  |  |  | 170,505 | 315,739 |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 6,876 | 4,323 |
U.S. Telecom |  |  |  |  |  |  |  |  |  |  |
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Goodwill | 35,268 |  |  |  | 39,639 |  |  |  | 35,268 | 39,639 |
U.S. Telecom | Operating segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 176,726 | 182,986 | 180,391
Depreciation and amortization |  |  |  |  |  |  |  |  | 24,471 | 22,239 | 19,070
Operating income (loss) |  |  |  |  |  |  |  |  | 49,078 | 74,459 | 85,519
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 129,274 |  |  |  | 119,596 |  |  |  | 129,274 | 119,596 |
Goodwill | 35,269 |  |  |  | 39,639 |  |  |  | 35,269 | 39,639 |
Long Lived Assets | 240,006 |  |  |  | 227,707 |  |  |  | 240,006 | 227,707 |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 31,983 | 37,588 |
U.S. Telecom | Operating segments | Wireless |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 148,053 | 155,390 | 153,040
U.S. Telecom | Operating segments | Wireline |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 26,448 | 25,241 | 26,155
U.S. Telecom | Operating segments | Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 2,225 | 2,355 | 1,196
International Telecom |  |  |  |  |  |  |  |  |  |  |
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Goodwill | 24,326 |  |  |  | 5,438 |  |  |  | 24,326 | 5,438 |
International Telecom | Operating segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 258,276 | 151,342 | 155,506
Depreciation and amortization |  |  |  |  |  |  |  |  | 40,492 | 24,883 | 28,079
Non-cash stock-based compensation |  |  |  |  |  |  |  |  | 22 |  |
Operating income (loss) |  |  |  |  |  |  |  |  | 35,436 | 28,200 | 28,674
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 372,741 |  |  |  | 133,262 |  |  |  | 372,741 | 133,262 |
Goodwill | 24,326 |  |  |  | 5,438 |  |  |  | 24,326 | 5,438 |
Long Lived Assets | 597,454 |  |  |  | 278,770 |  |  |  | 597,454 | 278,770 |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 62,808 | 22,804 |
International Telecom | Operating segments | Wireless |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 80,745 | 81,652 | 88,650
International Telecom | Operating segments | Wireline |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 161,571 | 61,244 | 59,129
International Telecom | Operating segments | Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 15,960 | 8,447 | 7,728
Renewable energy |  |  |  |  |  |  |  |  |  |  |
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Goodwill | 3,279 |  |  |  |  |  |  |  | 3,279 |  |
Renewable energy | Operating segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 22,001 | 21,040 | 449
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,987 | 4,820 | 105
Non-cash stock-based compensation |  |  |  |  |  |  |  |  | 114 | 267 |
Operating income (loss) |  |  |  |  |  |  |  |  | (246) | 6,720 | (2,218)
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 130,268 |  |  |  | 106,560 |  |  |  | 130,268 | 106,560 |
Goodwill | 3,279 |  |  |  |  |  |  |  | 3,279 |  |
Long Lived Assets | $ 190,253 |  |  |  | $ 122,788 |  |  |  | 190,253 | 122,788 |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 22,615 | 38 |
Renewable energy | Operating segments | Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 393 |  | $ 449
Renewable energy | Operating segments | Renewable energy |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | $ 21,608 | $ 21,040 |

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