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Stock Incentive Plans (Tables)
 3 Months Ended
Mar. 31, 2017
Stock Incentive Plans  
Summary of the Company's stock option activity

 

 

 

Shares

 

Weighted-
Average
Exercise Price

 

Weighted
Average
Remaining
Contractual
Term (years)

 

Aggregate
Intrinsic Value
(in thousands)

 

Outstanding at December 31, 2016

 
2,270,169

 

$
6.11

 
8.14

 

$
613

 

Granted

 
815,640

 

$
1.24

 

 

 

 

 

Exercised

 
(11,206

)

$
1.93

 

 

 

 

 

Cancelled or forfeited

 
(171,106

)

$
6.46

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outstanding at March 31, 2017

 
2,903,497

 

$
4.74

 
8.41

 

$
311

 

 

 

 

 

 

 

 

 

 

 

 

 

Vested and Exercisable at March 31, 2017

 
980,238

 

$
5.87

 
6.72

 

$
17