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Stock-Based Compensation - Summary of Stock Option Activity (Details) - Stock Options - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Stock Options, Outstanding as of December 31, 2021 3,037,463  
Number of Stock Options, Granted 790,100  
Number of Stock Options, Cancelled/forfeited (55,720)  
Number of Stock Options, Outstanding as of March 31, 2022 3,771,843 3,037,463
Number of Stock Options, Exercisable as of March 31, 2022 1,280,246  
Number of Stock Options, Vested and expected to vest as of March 31, 2022 3,771,843  
Weighted Average Exercise Price, Outstanding as of December 31, 2021 $ 5.34  
Weighted Average Exercise Price, Granted 3.53  
Weighted Average Exercise Price, Cancelled/forfeited 8.05  
Weighted Average Exercise Price, Outstanding as of March 31, 2022 4.92 $ 5.34
Weighted Average Exercise Price, Exercisable as of March 31, 2022 4.96  
Weighted Average Exercise Price, Vested and expected to vest as of March 31, 2022 $ 4.92  
Weighted Average Remaining Contractual Term, Outstanding 8 years 9 months 18 days 8 years 10 months 24 days
Weighted Average Remaining Contractual Term, Exercisable as of March 31, 2022 8 years 6 months  
Weighted Average Remaining Contractual Term, Vested and expected to vest as of March 31, 2022 8 years 9 months 18 days  
Aggregate Intrinsic Value, Outstanding   $ 629
Aggregate Intrinsic Value, Exercisable as of March 31, 2022 $ 0