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SEGMENT REPORTING (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 USD ($) segment | Mar. 31, 2017 USD ($) | Dec. 31, 2017 USD ($)
Segment reporting |  |  |
Number of reportable segments | segment | 3 |  |
Revenue |  |  |
Revenue | $ 104,475 | $ 128,115 |
Depreciation and amortization | 21,305 | 22,494 |
Non-cash stock-based compensation | 1,576 | 1,666 |
Operating income (loss) | 4,209 | 17,756 |
Segment Assets |  |  |
Cash, Cash equivalents, and Investments | 206,409 |  | $ 215,032
Total current assets | 303,355 |  | 342,928
Fixed assets, net | 673,488 |  | 643,146
Goodwill | 63,970 |  | 63,970
Total assets | 1,196,818 |  | 1,205,605
Total current liabilities | 168,891 |  | 161,705
Total debt | 154,895 |  | 155,792
Capital Expenditures |  |  |
Capital expenditures | 51,892 | 45,702 |
Hurricane rebuild capital expenditures | 30,851 |  |
Hurricane insurance proceeds | 34,606 |  |
Wireless |  |  |
Revenue |  |  |
Revenue | 50,548 | 58,925 |
Wireline |  |  |
Revenue |  |  |
Revenue | 48,096 | 64,159 |
Renewable Energy |  |  |
Revenue |  |  |
Revenue | 5,831 | 5,031 |
Corporate and Other |  |  |
Revenue |  |  |
Depreciation and amortization | 1,347 | 1,372 |
Non-cash stock-based compensation | 1,518 | 1,508 |
Operating income (loss) | (8,591) | (10,230) |
Segment Assets |  |  |
Cash, Cash equivalents, and Investments | 113,319 |  | 76,627
Total current assets | 129,302 |  | 93,497
Fixed assets, net | 18,168 |  | 17,752
Total assets | 220,213 |  | 184,050
Total current liabilities | 15,077 |  | 13,816
Capital Expenditures |  |  |
Capital expenditures | 2,291 | 1,204 |
U.S. Telecom | Operating segments |  |  |
Revenue |  |  |
Revenue | 28,499 | 43,793 |
Depreciation and amortization | 6,513 | 6,551 |
Operating income (loss) | 5,224 | 16,617 |
Segment Assets |  |  |
Cash, Cash equivalents, and Investments | 14,605 |  | 19,585
Total current assets | 40,105 |  | 40,975
Fixed assets, net | 96,961 |  | 99,462
Goodwill | 35,269 |  | 35,269
Total assets | 196,814 |  | 200,142
Total current liabilities | 40,848 |  | 41,248
Capital Expenditures |  |  |
Capital expenditures | 4,751 | 6,044 |
U.S. Telecom | Operating segments | Wireless |  |  |
Revenue |  |  |
Revenue | 27,401 | 37,702 |
U.S. Telecom | Operating segments | Wireline |  |  |
Revenue |  |  |
Revenue | 1,098 | 6,091 |
International Telecom segment | Operating segments |  |  |
Revenue |  |  |
Revenue | 70,145 | 79,291 |
Depreciation and amortization | 11,671 | 13,117 |
Non-cash stock-based compensation | 29 | 129 |
Operating income (loss) | 5,640 | 9,926 |
Segment Assets |  |  |
Cash, Cash equivalents, and Investments | 65,438 |  | 110,700
Total current assets | 115,348 |  | 190,396
Fixed assets, net | 402,093 |  | 367,485
Goodwill | 25,421 |  | 25,421
Total assets | 588,713 |  | 629,007
Total current liabilities | 95,655 |  | 91,887
Total debt | 93,676 |  | 94,577
Capital Expenditures |  |  |
Capital expenditures | 43,996 | 16,666 |
International Telecom segment | Operating segments | Wireless |  |  |
Revenue |  |  |
Revenue | 23,147 | 21,223 |
International Telecom segment | Operating segments | Wireline |  |  |
Revenue |  |  |
Revenue | 46,998 | 58,068 |
Renewable Energy | Operating segments |  |  |
Revenue |  |  |
Revenue | 5,831 | 5,031 |
Depreciation and amortization | 1,774 | 1,454 |
Non-cash stock-based compensation | 29 | 29 |
Operating income (loss) | 1,936 | 1,443 |
Segment Assets |  |  |
Cash, Cash equivalents, and Investments | 13,047 |  | 8,120
Total current assets | 18,600 |  | 18,060
Fixed assets, net | 156,266 |  | 158,447
Goodwill | 3,280 |  | 3,280
Total assets | 191,078 |  | 192,406
Total current liabilities | 17,311 |  | 14,754
Total debt | 61,219 |  | $ 61,215
Capital Expenditures |  |  |
Capital expenditures | 854 | 21,788 |
Renewable Energy | Operating segments | Renewable Energy |  |  |
Revenue |  |  |
Revenue | $ 5,831 | $ 5,031 |

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