Summary of significant accounting policies - Revenue disaggregated by product offerings (Details) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2018
USD ($)
|
Jun. 30, 2017
USD ($)
|
Jun. 30, 2018
USD ($)
segment
|
Jun. 30, 2017
USD ($)
|
|
| Primary revenue source | ||||
| Number of reportable segments | segment | 1 | |||
| Revenue | $ 59,601 | $ 49,033 | $ 117,760 | $ 93,366 |
| DAS | ||||
| Primary revenue source | ||||
| Revenue | 21,885 | 18,552 | 45,530 | 34,808 |
| Military | ||||
| Primary revenue source | ||||
| Revenue | 16,735 | 13,542 | 32,589 | 26,083 |
| Wholesale-Wi-Fi | ||||
| Primary revenue source | ||||
| Revenue | 13,530 | 7,300 | 24,679 | 14,131 |
| Retail | ||||
| Primary revenue source | ||||
| Revenue | 4,566 | 6,358 | 9,876 | 12,773 |
| Advertising and other | ||||
| Primary revenue source | ||||
| Revenue | $ 2,885 | $ 3,281 | $ 5,086 | $ 5,571 |