|
Stock incentive plans (Details 2) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Recognized stock-based compensation expense | ||
| Total stock-based compensation | $ 1,835 | $ 1,517 |
| Stock-based compensation expense capitalized | 216 | 35 |
| Network operations | ||
| Recognized stock-based compensation expense | ||
| Total stock-based compensation | 347 | 288 |
| Development and Technology Expense | ||
| Recognized stock-based compensation expense | ||
| Total stock-based compensation | 98 | 141 |
| Selling and marketing | ||
| Recognized stock-based compensation expense | ||
| Total stock-based compensation | 527 | 334 |
| General and administrative | ||
| Recognized stock-based compensation expense | ||
| Total stock-based compensation | $ 863 | $ 754 |