Quarterly report pursuant to Section 13 or 15(d)

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

v3.4.0.3
Stock-Based Compensation (Summary of Stock Options Activity) (Details)
 3 Months Ended
Mar. 31, 2016
USD ($)
$ / shares
shares
Number of Options  
Outstanding at beginning of period | shares 5,437,064
Granted | shares 366,457
Canceled and Forfeited | shares (112,000)
Expired | shares (299,000)
Outstanding at end of period | shares 5,392,521
Exercisable at end of period | shares 3,337,968
Weighted Average Exercise Price  
Outstanding at beginning of period, dollars per share | $ / shares $ 1.96
Granted, dollars per share | $ / shares 0.96
Canceled and Forfeited, dollars per share | $ / shares 1.86
Expired, dollars per share | $ / shares 2.42
Outstanding at end of period, dollars per share | $ / shares 1.87
Exercisable at end of period, dollars per share | $ / shares $ 2.03
Weighted Average Remaining Contractual Life (years)  
Outstanding at end of period 7 years 6 months
Exercisable at end of period 6 years 9 months 18 days
Aggregate Intrinsic Value  
Outstanding at end of period | $ $ 104,600
Exercisable at end of period | $ $ 101,276