Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation and Warrants - Narrative (Details)

v3.22.1
Stock-Based Compensation and Warrants - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation $ 879 $ 1,022  
Warrants available 125,000   125,000
Warrants minimum exercise price $ 1.63   $ 1.63
Fair value of options vested 403,913    
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of options vested $ 100    
General and Administrative Expense.      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation $ 900 1,000  
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation cost, recognition period 1 month 6 days    
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation cost related to non-vested awards $ 7,600    
Unrecognized compensation cost, recognition period 2 years 10 months 24 days    
Milestone-Based Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation   300  
Equity Incentive Plan 2019      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for issuance 43,459    
Director | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation $ 100 $ 100