v3.10.0.1

Stock incentive plans (Tables) | 12 Months Ended
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Dec. 31, 2018
Stock incentive plans |
Schedule of stock-based compensation expense |
|  | Year Ended December 31,
|  | 2018 |  | 2017 |  | 2016
Network operations |  | $ | 2,070 |  | $ | 2,174 |  | $ | 2,144
Development and technology |  |  | 1,242 |  |  | 1,068 |  |  | 1,070
Selling and marketing |  |  | 1,868 |  |  | 2,060 |  |  | 1,842
General and administrative |  |  | 7,088 |  |  | 8,913 |  |  | 7,749
Total stock-based compensation expense |  | $ | 12,268 |  | $ | 14,215 |  | $ | 12,805
Summary of stock option activity |
|  |  |  | Weighted |  | Weighted-Average |  |  |
|  | Number of |  | Average |  | Remaining |  | Aggregate
|  | Options |  | Exercise |  | Contract |  | Intrinsic
|  | (000’s) |  | Price |  | Life (years) |  | Value
Outstanding at December 31, 2017 |  | 1,283 |  | $ | 9.58 |  | 3.8 |  | $ | 16,573
Exercised |  | (972) |  | $ | 10.26 |  |  |  |  |
Canceled/forfeited |  | (7) |  | $ | 5.99 |  |  |  |  |
Outstanding and exercisable at December 31, 2018 |  | 304 |  | $ | 7.49 |  | 3.8 |  | $ | 3,970
Summary of RSU activity |
|  |  |  | Weighted
|  | Number of |  | Average
|  | Shares |  | Grant Date
|  | (000’s) |  | Fair Value
Non-vested at December 31, 2017 |  | 3,324 |  | $ | 7.35
Granted(2) |  | 978 |  | $ | 13.73
Vested |  | (1,113) |  | $ | 8.99
Canceled/forfeited |  | (70) |  | $ | 14.98
Non-vested at December 31, 2018 |  | 3,119 |  | $ | 8.60
| (2) |  | The RSUs granted to all of our named executive officers in 2016 were subject to satisfaction of specified service-based and performance-based conditions. The performance objectives were subject to under- or over- achievement on a sliding scale, with a threshold of 50% of the target number of RSUs and a maximum of 150% of the target RSUs. In February 2018, our Compensation Committee determined actual achievement of the 2016 performance-based RSUs resulting in additional RSUs granted of approximately 584,000 at a grant-date fair value of $6.13 per share during the year ended December 31, 2018.

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