Summary of significant accounting policies - Revenue disaggregated by product offerings (Details) $ in Thousands |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2018
USD ($)
segment
|
Mar. 31, 2017
USD ($)
|
|
| Primary revenue source | ||
| Number of reportable segments | segment | 1 | |
| Revenue | $ 58,159 | $ 44,333 |
| DAS | ||
| Primary revenue source | ||
| Revenue | 23,645 | 16,256 |
| Military | ||
| Primary revenue source | ||
| Revenue | 15,854 | 12,541 |
| Wholesale-Wi-Fi | ||
| Primary revenue source | ||
| Revenue | 11,149 | 6,831 |
| Retail | ||
| Primary revenue source | ||
| Revenue | 5,310 | 6,415 |
| Advertising and other | ||
| Primary revenue source | ||
| Revenue | $ 2,201 | $ 2,290 |