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Stockholders' Equity - Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jan. 16, 2020
Dec. 31, 2021
Dec. 31, 2020
Mar. 31, 2022
Jan. 15, 2020
Mar. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Preferred stock, authorized (in shares)   5,000,000   5,000,000 5,000,000  
Common stock, par value (USD per share)   $ 0.0001   $ 0.0001    
Votes equal to the number of shares of common stock convertible 11.07%          
Series A Convertible Preferred Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Preferred stock, authorized (in shares)   3,300,000   3,300,000 3,300,000  
Convertible Debt            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Net proceeds from the conversion of convertible debt to preferred stock $ 1.8          
Conversion rate (USD per share) $ 0.67          
Conversion of notes to stock (in shares) 2,709,018          
Preferred stock, authorized (in shares)           2,000,000
Common stock, par value (USD per share)           $ 0.0001
Convertible Debt | Preferred Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Conversion of notes to preferred stock (in shares)   1,721,023 111,548      
Convertible Debt | Common Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Conversion of notes to preferred stock (in shares)   344,205 22,310      
Convertible Debt | Common Stock | Fusion Park            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock issued upon preferred stock conversion (in shares)   184,851        
Convertible Debt | Common Stock | Brilliant Start            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock issued upon preferred stock conversion (in shares)   159,354