| Summary of stock based awards |
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Shares |
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Weighted average exercise price |
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Weighted average remaining term |
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Aggregate fair value |
Options |
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Outstanding as of December 31, 2012 |
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4,617,777 |
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4.93 |
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5.42 |
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7,981 |
Vested at December 31, 2012 |
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901,520 |
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— |
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— |
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— |
Exercisable at December 31, 2012 |
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841,644 |
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— |
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— |
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— |
Exercised |
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(153,556 |
) |
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— |
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|
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— |
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|
(216 |
Granted |
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674,809 |
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|
8.63 |
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— |
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|
1,444 |
Outstanding as of December 31, 2013 |
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5,139,030 |
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5.50 |
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4.81 |
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9,209 |
Vested at December 31, 2013 |
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911,493 |
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— |
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— |
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— |
Exercisable at December 31, 2013 |
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753,562 |
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— |
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— |
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— |
Exercised |
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(143,189 |
) |
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— |
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— |
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|
(273 |
Forfeited or expired |
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(314,250 |
) |
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— |
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— |
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(1,610 |
Granted |
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|
1,123,003 |
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|
3.64 |
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— |
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|
1,084 |
Outstanding as of December 31, 2014 |
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5,804,594 |
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|
4.57 |
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|
4.64 |
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8,410 |
Vested at December 31, 2014 |
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1,643,665 |
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— |
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— |
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— |
Exercisable at December 31, 2014 |
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1,500,476 |
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— |
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— |
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— |
Forfeited or expired |
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(159,828 |
) |
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— |
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— |
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(193) |
Granted |
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|
1,000,000 |
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|
1.2 |
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— |
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|
552 |
Outstanding as of December 31, 2015 |
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6,644,766 |
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4,09 |
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4.23 |
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8,769 |
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Restricted stock and restricted stock units |
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Non Vested as of December 31, 2012 |
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1,556,192 |
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— |
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1.81 |
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5,908 |
Granted |
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886,437 |
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— |
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— |
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7,650 |
Vested |
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(546,194 |
) |
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— |
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— |
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|
|
(2,287 |
Forfeited or expired |
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(12,452 |
) |
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— |
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— |
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|
(51 |
Non Vested as of December 31, 2013 |
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1,883,983 |
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|
— |
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|
1.40 |
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11,220 |
Granted |
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1,175,353 |
|
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|
— |
|
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— |
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4,278 |
Vested |
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(1,058,903 |
) |
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— |
|
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— |
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|
|
(4,580 |
Forfeited or expired |
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|
(3,089 |
) |
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— |
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— |
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|
(19 |
Non Vested as of December 31, 2014 |
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1,997,344 |
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— |
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2.00 |
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10,899 |
Granted |
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2,540,000 |
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— |
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— |
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3,048 |
Vested |
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(812,847 |
) |
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— |
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— |
|
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|
(5,746 |
Forfeited or expired |
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(3,538 |
) |
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— |
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— |
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(15 |
Non Vested as of December 31, 2015 |
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3,720,959 |
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$ |
— |
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2.45 |
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|
$ |
8,186 |
|