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Equity (Details 1) - $ / shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of options outstanding 520,000 339,459
Options outstanding, weighted average exercise price $ 4.22 $ 4.61
Number of options exercisable 166,875  
Options exercisable, weighted average exercise price $ 5.95  
Employee Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of options outstanding 520,000  
Options outstanding, Weighted average remaining contractual life 5 years 4 months 28 days  
Options outstanding, weighted average exercise price $ 5.41  
Number of options exercisable 166,875  
Options exercisable, weighted average exercise price $ 5.95  
Employee Stock Option [Member] | Exercise Price Range One [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of options outstanding 231,500  
Options outstanding, Weighted average remaining contractual life 6 years 2 months 12 days  
Options outstanding, weighted average exercise price $ 0.8  
Number of options exercisable  
Options exercisable, weighted average exercise price  
Employee Stock Option [Member] | Exercise Price Range Two [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of options outstanding 26,000  
Options outstanding, Weighted average remaining contractual life 3 years 1 month 27 days  
Options outstanding, weighted average exercise price $ 6.14  
Number of options exercisable 7,500  
Options exercisable, weighted average exercise price $ 6.14  
Employee Stock Option [Member] | Exercise Price Range Three [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of options outstanding 212,500  
Options outstanding, Weighted average remaining contractual life 4 years 6 months 7 days  
Options outstanding, weighted average exercise price $ 5.94  
Number of options exercisable 159,375  
Options exercisable, weighted average exercise price $ 5.94  
Employee Stock Option [Member] | Exercise Price Range Four [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of options outstanding 25,000  
Options outstanding, Weighted average remaining contractual life 6 years 10 months 17 days  
Options outstanding, weighted average exercise price $ 12.00  
Number of options exercisable  
Options exercisable, weighted average exercise price  
Employee Stock Option [Member] | Exercise Price Range Five [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of options outstanding 25,000  
Options outstanding, Weighted average remaining contractual life 6 years 7 months 17 days  
Options outstanding, weighted average exercise price $ 11.50  
Number of options exercisable  
Options exercisable, weighted average exercise price