Summary of significant accounting policies (Details 6) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2015
USD ($)
|
Sep. 30, 2015
USD ($)
|
Jun. 30, 2015
USD ($)
|
Mar. 31, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
Sep. 30, 2014
USD ($)
|
Jun. 30, 2014
USD ($)
|
Mar. 31, 2014
USD ($)
|
Dec. 31, 2015
USD ($)
segment
|
Dec. 31, 2014
USD ($)
|
Dec. 31, 2013
USD ($)
|
|
| Primary revenue source | |||||||||||
| Number of reportable segments | segment | 1 | ||||||||||
| Revenue | $ 38,771 | $ 37,186 | $ 34,277 | $ 29,392 | $ 33,627 | $ 30,822 | $ 28,396 | $ 26,452 | $ 139,626 | $ 119,297 | $ 106,746 |
| DAS | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | 46,455 | 38,259 | 32,681 | ||||||||
| Retail | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | 31,763 | 40,336 | 43,194 | ||||||||
| Wholesale - Wi-Fi | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | 21,923 | 15,209 | 17,261 | ||||||||
| Military | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | 19,898 | 4,486 | 1,260 | ||||||||
| Advertising and other | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | $ 19,587 | $ 21,007 | $ 12,350 | ||||||||