v3.6.0.2

Stock incentive plans (Tables) | 12 Months Ended
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Dec. 31, 2016
Stock incentive plans |
Schedule of stock-based compensation expense |
|  | Years ended December 31, |
|  | 2016 |  | 2015 |  | 2014 |
Network operations |  | $ | 2,144 |  | $ | 1,504 |  | $ | 1,356 |
Development and technology |  |  | 1,070 |  |  | 731 |  |  | 600 |
Selling and marketing |  |  | 1,842 |  |  | 3,411 |  |  | 2,017 |
General and administrative |  |  | 7,749 |  |  | 3,752 |  |  | 3,191 |
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Total stock-based compensation expense |  | $ | 12,805 |  | $ | 9,398 |  | $ | 7,164 |
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Summary of stock option activity |
|  | Number of Options (000's) |  | Weighted Average Exercise Price |  | Weighted- Average Remaining Contract Life (years) |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2015 |  |  | 3,748 |  | $ | 6.89 |  |  | 5.0 |  | $ | 6,611 |
Exercised |  |  | (532 | ) | $ | 5.61 |  |  |  |  |  |  |
Canceled/forfeited |  |  | (132 | ) | $ | 8.79 |  |  |  |  |  |  |
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Outstanding at December 31, 2016 |  |  | 3,084 |  | $ | 7.04 |  |  | 3.8 |  | $ | 17,145 |
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Exercisable at December 31, 2016 |  |  | 2,971 |  | $ | 7.07 |  |  | 3.6 |  | $ | 16,468 |
Summary of nonvested RSU activity |
|  | Number of Shares (000's) |  | Weighted Average Grant Date Fair Value |
Non-vested at December 31, 2015 |  |  | 1,819 |  | $ | 6.39 |
Granted |  |  | 3,200 |  | $ | 6.42 |
Vested |  |  | (1,054 | ) | $ | 6.85 |
Canceled/forfeited |  |  | (140 | ) | $ | 7.07 |
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Non-vested at December 31, 2016 |  |  | 3,825 |  | $ | 6.55 |
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