Summary of significant accounting policies (Details 2) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
|
Sep. 30, 2015
USD ($)
|
Sep. 30, 2014
USD ($)
|
Sep. 30, 2015
USD ($)
segment
|
Sep. 30, 2014
USD ($)
|
Dec. 31, 2014
USD ($)
|
|
| Primary revenue source | |||||
| Number of reportable segments | segment | 1 | ||||
| Revenue | $ 37,186 | $ 30,822 | $ 100,855 | $ 85,670 | |
| Marketable securities | |||||
| Short-term marketable securities | 0 | 0 | $ 1,614 | ||
| Unrealized gains or losses in accumulated other comprehensive loss | 0 | 0 | $ 0 | ||
| Retail | |||||
| Primary revenue source | |||||
| Revenue | 7,754 | 10,144 | 24,608 | 30,865 | |
| DAS | |||||
| Primary revenue source | |||||
| Revenue | 13,142 | 10,429 | 34,863 | 27,656 | |
| Wholesale - Wi-Fi | |||||
| Primary revenue source | |||||
| Revenue | 5,454 | 4,709 | 15,096 | 11,477 | |
| Military | |||||
| Primary revenue source | |||||
| Revenue | 5,257 | 943 | 13,003 | 2,043 | |
| Advertising and other | |||||
| Primary revenue source | |||||
| Revenue | $ 5,579 | $ 4,597 | $ 13,285 | $ 13,629 | |