Quarterly report pursuant to Section 13 or 15(d)

Share-based Compensation (Details 2)

v3.19.1
Share-based Compensation (Details 2) - Stock options [Member] - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares Outstanding, Beginning balance 1,105,059  
Shares, Granted  
Shares, Exercised  
Shares, Cancelled (25,000)  
Shares Outstanding, Ending balance 1,080,059 1,105,059
Shares, Exercisable 970,190 949,355
Weighted Average Fair Value Per Share, Outstanding, Beginning balance $ 1.24  
Weighted Average Fair Value Per Share, Granted  
Weighted Average Fair Value Per Share, Exercised  
Weighted Average Fair Value Per Share, Cancelled  
Weighted Average Fair Value Per Share, Outstanding, Ending balance 1.24 $ 1.24
Weighted Average Fair Value Per Share, Exercisable 1.23 1.23
Weighted Average Exercise Price Per Share, Outstanding, Beginning balance 4.06  
Weighted Average Exercise Price Per Share, Granted  
Weighted Average Exercise Price Per Share, Exercised  
Weighted Average Exercise Price Per Share, Cancelled  
Weighted Average Exercise Price Per Share, Outstanding, Ending balance 4.05 4.06
Weighted Average Exercise Price Per Share, Exercisable $ 4.01 $ 4.00
Weighted Average Remaining Terms (in years), Outstanding, Beginning balance   8 years 4 months 28 days
Weighted Average Remaining Terms (in years), Outstanding, Ending balance 8 years 1 month 24 days  
Weighted Average Remaining Terms (in years), Exercisable 8 years 25 days 8 years 3 months 18 days
Aggregate intrinsic Value, Outstanding, Beginning balance  
Aggregate Intrinsic Value, Outstanding, Ending balance  
Aggregate Intrinsic Value, Exercisable