Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Summary of Stock Options Activity) (Details)

v3.3.0.814
Stock-Based Compensation (Summary of Stock Options Activity) (Details)
 9 Months Ended
Sep. 30, 2015
USD ($)
$ / shares
shares
Number of Options  
Outstanding at beginning of period 5,345,764
Granted 1,365,400
Exercised (146,625)
Canceled and Forfeited (1,081,725)
Expired (5,750)
Outstanding at end of period 5,477,064
Exercisable at end of period 2,222,049
Weighted Average Exercise Price  
Outstanding at beginning of period, dollars per share | $ / shares $ 2.16
Granted, dollars per share | $ / shares 1.67
Exercised, dollars per share | $ / shares 0.61
Canceled and Forfeited, dollars per share | $ / shares 2.82
Expired, dollars per share | $ / shares 1.26
Outstanding at end of period, dollars per share | $ / shares 1.95
Exercisable at end of period, dollars per share | $ / shares $ 2.21
Weighted Average Remaining Contractual Life (years)  
Outstanding at end of period 7 years 4 months 24 days
Exercisable at end of period 5 years 3 months 18 days
Aggregate Intrinsic Value  
Outstanding at end of period | $ $ 3,058,790
Exercisable at end of period | $ $ 1,012,990