Property and equipment- Depreciation and amortization (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
|
| Depreciation and amortization | ||||
| Total depreciation and amortization of property and equipment | $ 11,400 | $ 9,812 | $ 21,708 | $ 17,866 |
| Network access | ||||
| Depreciation and amortization | ||||
| Total depreciation and amortization of property and equipment | 6,205 | 6,155 | 11,462 | 10,987 |
| Network operations | ||||
| Depreciation and amortization | ||||
| Total depreciation and amortization of property and equipment | 3,255 | 1,843 | 6,450 | 3,829 |
| Development and Technology | ||||
| Depreciation and amortization | ||||
| Total depreciation and amortization of property and equipment | 1,689 | 1,336 | 3,291 | 2,510 |
| General and administrative | ||||
| Depreciation and amortization | ||||
| Total depreciation and amortization of property and equipment | $ 251 | $ 478 | $ 505 | $ 540 |