Annual report pursuant to Section 13 and 15(d)

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

v3.21.1
Stockholders' Equity - Accounting for Stock-Based Compensation (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Stockholders’ Equity      
Stock-based compensation $ 6,377,857 $ 3,269,948  
Compensation expenses capitalized $ 0 $ 0  
Term of award   P10Y P10Y
Maximum      
Stockholders’ Equity      
Vesting period 10 years    
Employee stock options      
Stockholders’ Equity      
Vesting period 4 months