XML 51 R40.htm IDEA: XBRL DOCUMENT v3.21.1
Stockholders' Equity - Warrants (Details) - Warrant - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Number of Other than Options      
Outstanding and exercisable, beginning balance (in shares) 579,815    
Granted (in shares) 0    
Canceled (in shares) 0    
Exercised (in shares) 0    
Expired/Forfeited (in shares) 0    
Outstanding and exercisable, ending balance (in shares) 579,815   579,815
Weighted Average Exercise Price      
Outstanding and exercisable, beginning balance (in dollars per share) $ 4.63    
Granted (in dollars per share) 0.00    
Canceled (in dollars per share) 0.00    
Exercised (in dollars per share) 0.00    
Expired/Forfeited (in dollars per share) 0.00    
Outstanding and exercisable, ending balance (in dollars per share) $ 4.63   $ 4.63
Weighted Average Remaining Contractual Life (in Years), Outstanding and exercisable 1 year 26 days   1 year 3 months 26 days
Aggregate Intrinsic Value, Outstanding and exercisable $ 0   $ 0
Other disclosures      
Compensation expense $ 0 $ 0  
Five year expiration      
Stockholders' Equity      
Expiration period 5 years    
Ten year expiration      
Stockholders' Equity      
Expiration period 10 years