Annual report pursuant to Section 13 and 15(d)

EMPLOYEE STOCK OPTIONS AND RESTRICTED STOCK AWARD PLAN (Details 3)

v3.8.0.1
EMPLOYEE STOCK OPTIONS AND RESTRICTED STOCK AWARD PLAN (Details 3)
 12 Months Ended
Dec. 31, 2017
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Number Outstanding 3,193,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 6 years 3 months 7 days
Options Outstanding - Number Exercisable 2,093,900
Exercise Price One [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 2.00
Options Outstanding - Number Outstanding 555,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 4 years 2 months 1 day
Options Outstanding - Number Exercisable 555,000
Exercise Price Two [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 4.50
Options Outstanding - Number Outstanding 1,340,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 5 years 2 months 26 days
Options Outstanding - Number Exercisable 1,080,000
Exercise Price Three [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 5.50
Options Outstanding - Number Outstanding 5,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 5 years 5 months 12 days
Options Outstanding - Number Exercisable 0
Exercise Price Four [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 7.50
Options Outstanding - Number Outstanding 29,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 5 years 8 months 23 days
Options Outstanding - Number Exercisable 23,000
Exercise Price Five [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 10.00
Options Outstanding - Number Outstanding 90,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 6 years 2 months 16 days
Options Outstanding - Number Exercisable 72,000
Exercise Price Six [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 14.54
Options Outstanding - Number Outstanding 20,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 6 years 11 months 26 days
Options Outstanding - Number Exercisable 12,000
Exercise Price Seven [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 8.00
Options Outstanding - Number Outstanding 282,500
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 7 years 2 months 1 day
Options Outstanding - Number Exercisable 168,700
Exercise Price Eight [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 8.25
Options Outstanding - Number Outstanding 50,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 8 years 2 months 8 days
Options Outstanding - Number Exercisable 20,000
Exercise Price Nine [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 5.25
Options Outstanding - Number Outstanding 223,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 8 years 3 months 11 days
Options Outstanding - Number Exercisable 45,000
Exercise Price Ten [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 6.42
Options Outstanding - Number Outstanding 15,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 8 years 7 months 2 days
Options Outstanding - Number Exercisable 3,000
Exercise Price Eleven [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 11.75
Options Outstanding - Number Outstanding 576,000
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 9 years 2 months 12 days
Options Outstanding - Number Exercisable 115,200
Exercise Price Twelve [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding - Exercise price | $ / shares $ 11.70
Options Outstanding - Number Outstanding 7,500
Options Outstanding - Weighted-Average Remaining Contractual Life (in years) 9 years 3 months 18 days
Options Outstanding - Number Exercisable 0