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Stockholders' Equity - Warrants (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Other disclosures      
Compensation expense $ 30,000.00 $ 160,000  
Warrant      
Number of Other than Options      
Outstanding and exercisable, beginning balance (in shares) 116,065    
Granted (in shares) 0    
Canceled (in shares) 0    
Exercised (in shares) 0    
Expired/Forfeited (in shares) 0    
Outstanding and exercisable, ending balance (in shares) 116,065   116,065
Weighted Average Exercise Price      
Outstanding and exercisable, beginning balance (in dollars per share) $ 3.15    
Granted (in dollars per share) 0    
Canceled (in dollars per share) 0    
Exercised (in dollars per share) 0    
Expired/Forfeited (in dollars per share) 0    
Outstanding and exercisable, ending balance (in dollars per share) $ 3.15   $ 3.15
Weighted Average Remaining Contractual Life (in Years), Outstanding and exercisable 2 years 3 months 25 days   2 years 6 months 25 days
Aggregate Intrinsic Value, Outstanding and exercisable $ 0   $ 0
Other disclosures      
Compensation expense $ 0 $ 0