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Stock-Based Compensation - Outstanding (Details) - 2020 Plan - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Number of Shares    
Outstanding at the beginning 1,386,811  
Granted 499,130  
Forfeited (28,850)  
Outstanding at the end 1,857,091 1,386,811
Vested and exercisable at the end 477,322  
Weighted- Average Exercise Price    
Outstanding at the beginning (in dollars per share) $ 13.28  
Granted (in dollars per share) 5.08  
Forfeited (in dollars per share) 12.26  
Outstanding at the end (in dollars per share) 11.10 $ 13.28
Vested and exercisable at the end (in dollars per share) $ 11.04  
Weighted-Average Remaining Contractual Term (years)    
Outstanding (in years) 8 years 2 months 12 days 7 years 9 months 18 days
Vested and exercisable (in years) 5 years 8 months 12 days  
Aggregate Intrinsic Value    
Outstanding at the end (in dollars) $ 524 $ 179
Vested and exercisable at the end (in dollars) $ 87  
Other Disclosures    
Weighted average grant date fair value of options granted $ 3.03  
Options to purchase common stock    
Other Disclosures    
Total unrecognized compensation expense $ 7,300  
Weighted-average period 2 years 10 months 24 days