Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Stock Option Activity (Details)

v3.20.4
Stock-Based Compensation - Stock Option Activity (Details) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Options    
Outstanding, beginning of year (in shares) 18,248  
Granted (in shares) 0 0
Forfeited, expired or cancelled (in shares) 8,748  
Exercised (in shares) 0  
Outstanding, end of year (in shares) 9,500 18,248
Exercisable, end of year (in shares) 9,500  
Weighted Average Exercise Price    
Outstanding, beginning of year (in usd per share) $ 1.74  
Granted (in usd per share) 0  
Forfeited, expired or cancelled (in usd per share) 3.01  
Exercised (in usd per share) 0  
Outstanding, end of year (in usd per share) 0.56 $ 1.74
Exercisable, end of year (in usd per share) $ 0.56