Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation - Stock Options With Company's Market-based Option Activity (Details)

v3.21.2
Stock Based Compensation - Stock Options With Company's Market-based Option Activity (Details) - Market Based Options - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Number of shares      
Balance, beginning of period (in shares) 1,000,000    
Granted (in shares) 0    
Balance, ending of period (in shares) 1,000,000 1,000,000  
Exercisable (in shares) 1,000,000    
Weighted average exercise price per share      
Balance (in dollars per share) $ 3.29 $ 3.29  
Granted (in dollars per share) $ 0    
Weighted average remaining contractual term (in years)      
Balance 2 years 8 months 12 days 9 years 6 months  
Aggregate intrinsic value      
Aggregate intrinsic value   $ 65 $ 0
Exercisable aggregate intrinsic value $ 0