Annual report pursuant to Section 13 and 15(d)

STOCK INCENTIVE PLAN (Details 4)

v3.3.1.900
STOCK INCENTIVE PLAN (Details 4) - $ / shares
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options 1,581,123 1,816,204 2,162,067
$ 0.36 - $ 3.00 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices, Lower Limit $ 0.36    
Range of Exercise Prices, Upper Limit $ 3.00    
Options 737,746    
Weighted Average Contractual Life Remaining (Years) 4 years 6 months    
Weighted Average Exercise Price $ 2.59    
Exercisable Options 401,246    
Weighted Average Grant Date Fair Value $ 1.71    
$ 3.01 - $ 6.00 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices, Lower Limit 3.01    
Range of Exercise Prices, Upper Limit $ 6.00    
Options 146,214    
Weighted Average Contractual Life Remaining (Years) 2 years    
Weighted Average Exercise Price $ 5.13    
Exercisable Options 145,414    
Weighted Average Grant Date Fair Value $ 4.20    
$ 6.01 - $ 9.00 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices, Lower Limit 6.01    
Range of Exercise Prices, Upper Limit $ 9.00    
Options 679,938    
Weighted Average Contractual Life Remaining (Years) 4 years 7 months 6 days    
Weighted Average Exercise Price $ 6.97    
Exercisable Options 375,688    
Weighted Average Grant Date Fair Value $ 4.86    
$ 9.01 - $ 12.00 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices, Lower Limit 9.01    
Range of Exercise Prices, Upper Limit $ 12.00    
Options 22,350    
Weighted Average Contractual Life Remaining (Years) 2 months 12 days    
Weighted Average Exercise Price $ 11.80    
Exercisable Options 22,350    
Weighted Average Grant Date Fair Value $ 8.80    
$ 12.01 - $ 15.00 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices, Lower Limit 12.01    
Range of Exercise Prices, Upper Limit $ 15.00    
Options 2,875    
Weighted Average Contractual Life Remaining (Years) 3 months 18 days    
Weighted Average Exercise Price $ 13.20    
Exercisable Options 2,875    
Weighted Average Grant Date Fair Value $ 9.78    
$ 0.36 - $ 15.00 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices, Lower Limit 0.36    
Range of Exercise Prices, Upper Limit $ 15.00    
Options 1,589,123    
Weighted Average Contractual Life Remaining (Years) 4 years 2 months 12 days    
Weighted Average Exercise Price $ 4.84    
Exercisable Options 947,573    
Weighted Average Grant Date Fair Value $ 3.40