Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Share-based Compensation, Shares Outstanding under Stock Option Plans, by Exercise Price Range (Details)

v3.7.0.1
Stockholders' Equity - Schedule of Share-based Compensation, Shares Outstanding under Stock Option Plans, by Exercise Price Range (Details)
 3 Months Ended
Mar. 31, 2017
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding, Outstanding Number of Options 7,979,265
Options Exercisable, Weighted Exercise Average Remaining Life In Years 2 years 3 months 18 days
Options Exercisable, Exercisable Number of Options 5,136,718
Exercise Price Range 2.20 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding, Weighted Exercise Average Price | $ / shares $ 2.20
Options Outstanding, Outstanding Number of Options 3,041,890
Options Exercisable, Exercisable Number of Options 1,061,573
Exercise Price Range 2.20 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Exercisable, Weighted Exercise Average Remaining Life In Years 3 years 8 months 12 days
Exercise Price Range 2.48 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding, Weighted Exercise Average Price | $ / shares $ 2.48
Options Outstanding, Outstanding Number of Options 4,847,375
Options Exercisable, Weighted Exercise Average Remaining Life In Years 1 year 10 months 24 days
Options Exercisable, Exercisable Number of Options 3,971,395
Exercise Price Range 3.30 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding, Weighted Exercise Average Price | $ / shares $ 3.30
Options Outstanding, Outstanding Number of Options 10,000
Options Exercisable, Weighted Exercise Average Remaining Life In Years 3 years 4 months 24 days
Options Exercisable, Exercisable Number of Options 3,750
Exercise Price Range 3.50 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding, Weighted Exercise Average Price | $ / shares $ 3.50
Options Outstanding, Outstanding Number of Options 25,000
Options Exercisable, Weighted Exercise Average Remaining Life In Years 1 year 6 months
Options Exercisable, Exercisable Number of Options 25,000
Exercise Price Range 3.85 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding, Weighted Exercise Average Price | $ / shares $ 3.85
Options Outstanding, Outstanding Number of Options 75,000
Options Exercisable, Weighted Exercise Average Remaining Life In Years 3 months 18 days
Options Exercisable, Exercisable Number of Options 75,000