Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock Option Activity (Details)

v3.20.1
Stockholders' Equity - Stock Option Activity (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Stockholders' Equity    
Number of shares, Options vested and expected to vest 1,410,501  
Number of shares, Options vested and expected to vest 1,410,501 1,410,501
Number of shares, Options Exercisable 1,310,501  
Weighted average exercise price, Options vested and expected to vest   $ 4.30
Weighted average exercise price, Options vested and expected to vest $ 4.30  
Weighted average exercise price, Options vested and exercisable $ 4.54  
Total weighted average intrinsic value, Options vested and expected to vest $ 285,744 $ 684,752
Total weighted average intrinsic value, Exercisable $ 214,744  
Weighted average remaining contractual life (years), Options vested and expected to vest 2 years 29 days 2 years 3 months 29 days
Weighted average remaining contractual life (years), Options vested and exercisable 1 year 11 months 12 days