v3.4.0.3
Stock incentive plans (Details 2) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Recognized stock-based compensation expense    
Total stock-based compensation $ 3,605 $ 1,835
Stock-based compensation expense capitalized 182 216
Network operations    
Recognized stock-based compensation expense    
Total stock-based compensation 646 347
Development and Technology    
Recognized stock-based compensation expense    
Total stock-based compensation 312 98
Selling and marketing    
Recognized stock-based compensation expense    
Total stock-based compensation 549 527
General and administrative    
Recognized stock-based compensation expense    
Total stock-based compensation $ 2,098 $ 863