Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details 2)

v3.8.0.1
Stockholders' Equity (Details 2)
3 Months Ended
Mar. 31, 2018
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Number Outstanding 5,722,105
Stock Options, Number Exercisable 3,191,721
Exercise Price $0.05 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 0.05
Stock Options, Number Outstanding 52,876
Stock Options, Weighted Average Remaining Contractual Term 4 years 4 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 0.05
Stock Options, Number Exercisable 52,877
Exercise Price $0.26 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 0.26
Stock Options, Number Outstanding 915,497
Stock Options, Weighted Average Remaining Contractual Term 6 years 11 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 0.26
Stock Options, Number Exercisable 915,497
Exercise Price $0.73 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 0.73
Stock Options, Number Outstanding 1,381,691
Stock Options, Weighted Average Remaining Contractual Term 6 years 7 months 13 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 0.73
Stock Options, Number Exercisable 1,135,743
Exercise Price $1.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 1.00
Stock Options, Number Outstanding 287,124
Stock Options, Weighted Average Remaining Contractual Term 7 years 3 months 22 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 1.00
Stock Options, Number Exercisable 200,457
Exercise Price $1.10 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 1.10
Stock Options, Number Outstanding 8,000
Stock Options, Weighted Average Remaining Contractual Term 7 years 9 months 11 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 1.10
Stock Options, Number Exercisable 3,833
Exercise Price $1.17 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 1.17
Stock Options, Number Outstanding 31,605
Stock Options, Weighted Average Remaining Contractual Term 7 years 7 months 13 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 1.17
Stock Options, Number Exercisable 6,605
Exercise Price $1.22 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 1.22
Stock Options, Number Outstanding 70,312
Stock Options, Weighted Average Remaining Contractual Term 7 years 10 months 6 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 1.22
Stock Options, Number Exercisable 13,021
Exercise Price $1.50 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 1.50
Stock Options, Number Outstanding 28,000
Stock Options, Weighted Average Remaining Contractual Term 7 years 11 months 1 day
Stock Options, Weighted Average Exercise Price | $ / shares $ 1.50
Stock Options, Number Exercisable 8,834
Exercise Price $1.55 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 1.55
Stock Options, Number Outstanding 1,456,000
Stock Options, Weighted Average Remaining Contractual Term 7 years 11 months 8 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 1.55
Stock Options, Number Exercisable 566,000
Exercise Price $2.02 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 2.02
Stock Options, Number Outstanding 85,000
Stock Options, Weighted Average Remaining Contractual Term 9 years 4 months 9 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 2.02
Stock Options, Number Exercisable 40,000
Exercise Price $2.40 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 2.40
Stock Options, Number Outstanding 926,000
Stock Options, Weighted Average Remaining Contractual Term 8 years 10 months 3 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 2.40
Stock Options, Number Exercisable 145,833
Exercise Price $4.60 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 4.60
Stock Options, Number Outstanding 200,000
Stock Options, Weighted Average Remaining Contractual Term 9 years 8 months 9 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 4.60
Stock Options, Number Exercisable 12,500
Exercise Price $5.30 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Stock Options, Exercise Price | $ / shares $ 5.30
Stock Options, Number Outstanding 280,000
Stock Options, Weighted Average Remaining Contractual Term 9 years 11 months 26 days
Stock Options, Weighted Average Exercise Price | $ / shares $ 5.30
Stock Options, Number Exercisable 90,521