Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Accounting for Stock-Based Compensation (Details)

v3.20.1
Stockholders' Equity - Accounting for Stock-Based Compensation (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Stockholders’ Equity    
Stock based compensation. $ 948,192 $ 2,060,304
Compensation expenses capitalized   $ 0
Employee stock options    
Stockholders’ Equity    
Vesting period 4 years  
Term of award P10Y P10Y
Employee stock options | Maximum    
Stockholders’ Equity    
Term of award   P10Y