Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details)

v3.20.4
Stock-Based Compensation (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Nov. 30, 2019
Dec. 31, 2020
Dec. 31, 2019
Stock Option      
Stock Based Compensation (Textual)      
Options authorized (in shares)   8,000,000.0  
Shares available for issuance (in shares)   6,600,000 8,000,000.0
Stock options, accelerated vesting (in shares) 1,000,000.0    
Stock options, accelerated vesting, amount $ 0.5    
Stock Option | Directors, officers consultants and employees      
Stock Based Compensation (Textual)      
Unrecognized compensation expense   $ 0.2  
Unrecognized compensation expense, unvested awards, period for recognition   1 year 9 months 18 days  
Restricted Stock | Directors, officers consultants and employees      
Stock Based Compensation (Textual)      
Unrecognized compensation expense   $ 2.9  
Unrecognized compensation expense, unvested awards, period for recognition   1 year 10 months 24 days