|
Summary of significant accounting policies (Details 6) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2014
|
Sep. 30, 2014
|
Jun. 30, 2014
|
Mar. 31, 2014
|
Dec. 31, 2013
|
Sep. 30, 2013
|
Jun. 30, 2013
|
Mar. 31, 2013
|
Dec. 31, 2014
item
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Primary revenue source | |||||||||||
| Number of reportable segments | 1 | ||||||||||
| Revenue | $ 33,627 | $ 30,822 | $ 28,396 | $ 26,452 | $ 28,766 | $ 28,607 | $ 26,239 | $ 23,134 | $ 119,297 | $ 106,746 | $ 102,506 |
| Retail | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | 40,336 | 43,194 | 46,145 | ||||||||
| DAS | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | 38,259 | 32,681 | 30,751 | ||||||||
| Wholesale Wi-Fi | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | 15,209 | 17,261 | 18,744 | ||||||||
| Military | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | 4,486 | 1,260 | |||||||||
| Advertising and other | |||||||||||
| Primary revenue source | |||||||||||
| Revenue | $ 21,007 | $ 12,350 | $ 6,866 | ||||||||