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Stock Options (Details 1) - Stock Option [Member] - $ / shares
6 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding, Number of Option Shares 338,000 212,044
Outstanding, Weighted Average Exercise Price $ 4.47 $ 12.79
Outstanding, Weighted Average Remaining Life (Years) 2 years 2 months 5 days  
Exercisable, Number of Option Shares 338,000  
Exercisable, Weighted Average Exercise Price $ 4.61  
5.74 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise Prices $ 5.74  
Outstanding, Number of Option Shares 198,000  
Outstanding, Weighted Average Exercise Price $ 5.74  
Outstanding, Weighted Average Remaining Life (Years) 2 years 8 months 26 days  
Exercisable, Number of Option Shares 198,000  
Exercisable, Weighted Average Exercise Price $ 5.74  
3.00 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise Prices $ 3.00  
Outstanding, Number of Option Shares 90,000  
Outstanding, Weighted Average Exercise Price $ 3.00  
Outstanding, Weighted Average Remaining Life (Years) 1 year 2 months 12 days  
Exercisable, Number of Option Shares 60,000  
Exercisable, Weighted Average Exercise Price $ 3.00  
2.09 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise Prices $ 2.09  
Outstanding, Number of Option Shares 50,000  
Outstanding, Weighted Average Exercise Price $ 2.09  
Outstanding, Weighted Average Remaining Life (Years) 1 year 8 months 26 days  
Exercisable, Number of Option Shares 50,000  
Exercisable, Weighted Average Exercise Price $ 2.09