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Equity-Based Compensation - Stock options, fair value assumptions (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
employee
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
Equity-Based Compensation    
Expected dividend yield (as a percent) 0.00%  
Stock options granted during the period (in shares) | shares 3,786,967  
Equity-based compensation expense $ 4,958 $ 1,296
Former employees providing consulting services    
Equity-Based Compensation    
Equity-based compensation expense $ 200  
Number of former employees | employee 2  
Additional period granted for exercise of vested options 90 days  
Stock options    
Equity-Based Compensation    
Fair value of options granted (in dollars per share) | $ / shares $ 6.28 $ 3.60
Risk-free interest rate, minimum (as a percent) 0.63% 0.16%
Risk-free interest rate, maximum (as a percent) 1.39% 0.36%
Expected dividend yield (as a percent) 0.00% 0.00%
Expected volatility, minimum (as percentage) 80.55% 78.84%
Expected volatility, maximum (as percentage) 85.26% 96.73%
Stock options | Minimum    
Equity-Based Compensation    
Expected term (in years) 5 years 6 months 7 days 2 years 3 months
Stock options | Maximum    
Equity-Based Compensation    
Expected term (in years) 10 years 6 years 29 days
Stock options, excluding performance-based awards    
Equity-Based Compensation    
Total unrecognized compensation cost $ 19,700  
Weighted-average period for unrecognized compensation cost to be recognized 3 years 1 month 9 days  
Stock options, vesting based on performance    
Equity-Based Compensation    
Equity-based compensation expense $ 0