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Note 10 - Revenue (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Year ended December 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Network Access Services: |  |  |  |  |  |  |  |  |  |  |  |
Mobile Services |  | $ | 89,340 |  |  | $ | 83,885 |  |  | $ | 70,127 |
Other Services |  |  | 7,984 |  |  |  | 5,567 |  |  |  | 4,179 |
Total Network Access Services |  |  | 97,324 |  |  |  | 89,452 |  |  |  | 74,306 |
Domain Services: |  |  |  |  |  |  |  |  |  |  |  |
Wholesale |  |  |  |  |  |  |  |  |  |  |  |
Domain Services |  |  | 189,434 |  |  |  | 183,731 |  |  |  | 89,010 |
Value Added Services |  |  | 17,756 |  |  |  | 17,832 |  |  |  | 8,642 |
Total Wholesale |  |  | 207,190 |  |  |  | 201,563 |  |  |  | 97,652 |
Retail |  |  | 34,524 |  |  |  | 31,649 |  |  |  | 14,630 |
Portfolio |  |  | 6,975 |  |  |  | 6,757 |  |  |  | 3,231 |
Total Domain Services |  |  | 248,689 |  |  |  | 239,969 |  |  |  | 115,513 |
|  | $ | 346,013 |  |  | $ | 329,421 |  |  | $ | 189,819 |
Schedule of Cost of Revenues by Revenue Stream [Table Text Block] |
|  | Year ended December 31, |
|  |  | 2018 |  |  | 2017 |  |  | 2016 |
Network Access Services: |  |  |  |  |  |  |  |  |  |  |  |
Mobile Services |  | $ | 46,061 |  |  | $ | 45,335 |  |  | $ | 35,915 |
Other Services |  |  | 3,994 |  |  |  | 3,305 |  |  |  | 1,910 |
Total Network Access Services |  |  | 50,055 |  |  |  | 48,640 |  |  |  | 37,825 |
Domain Services: |  |  |  |  |  |  |  |  |  |  |  |
Wholesale |  |  |  |  |  |  |  |  |  |  |  |
Domain Services |  |  | 160,216 |  |  |  | 161,013 |  |  |  | 72,948 |
Value Added Services |  |  | 3,154 |  |  |  | 2,450 |  |  |  | 2,032 |
Total Wholesale |  |  | 163,370 |  |  |  | 163,463 |  |  |  | 74,980 |
Retail |  |  | 17,725 |  |  |  | 17,346 |  |  |  | 6,766 |
Portfolio |  |  | 953 |  |  |  | 1,151 |  |  |  | 616 |
Total Domain Services |  |  | 182,048 |  |  |  | 181,960 |  |  |  | 82,362 |
Network Expenses: |  |  |  |  |  |  |  |  |  |  |  |
Network, other costs |  |  | 9,846 |  |  |  | 9,324 |  |  |  | 5,210 |
Network, depreciation and amortization costs |  |  | 7,294 |  |  |  | 4,976 |  |  |  | 1,368 |
|  |  | 17,140 |  |  |  | 14,300 |  |  |  | 6,578 |
|  | $ | 249,243 |  |  | $ | 244,900 |  |  | $ | 126,765 |
Contract with Customer, Asset and Liability [Table Text Block] |
|  | Year ended December 31, 2018 |
Balance, beginning of period |  | $ | 160,582 |
Deferred revenue |  |  | 222,208 |
Recognized revenue (1) |  |  | (239,096 | )
Balance, end of period |  | $ | 143,694 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] |
|  |  | Year ended December 31, 2018 |
2019 |  |  | $ | 116,398 |
2020 |  |  |  | 12,751 |
2021 |  |  |  | 5,498 |
2022 |  |  |  | 3,456 |
2023 |  |  |  | 2,163 |
Thereafter |  |  |  | 3,074 |
Total |  |  | $ | 143,340 |

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