Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Stock-Based Compensation (Summary of Stock Options Activity) (Details)
 6 Months Ended
Jun. 30, 2016
USD ($)
$ / shares
shares
Number of Options  
Outstanding at beginning of period | shares 5,437,064
Granted | shares 459,457
Canceled and Forfeited | shares (1,504,550)
Expired | shares (299,000)
Outstanding at end of period | shares 4,092,971
Exercisable at end of period | shares 2,808,491
Weighted Average Exercise Price  
Outstanding at beginning of period, dollars per share | $ / shares $ 1.96
Granted, dollars per share | $ / shares 1.05
Canceled and Forfeited, dollars per share | $ / shares 1.58
Expired, dollars per share | $ / shares 2.42
Outstanding at end of period, dollars per share | $ / shares 1.97
Exercisable at end of period, dollars per share | $ / shares $ 2.05
Weighted Average Remaining Contractual Life (years)  
Outstanding at end of period 7 years
Exercisable at end of period 6 years 6 months
Aggregate Intrinsic Value  
Outstanding at end of period | $ $ 21,450
Exercisable at end of period | $ $ 21,450