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Stock-Based Compensation - Summary of Stock Option Activity for Amended 2014 Plan and Related Information (Details) - Amended and Restated Two Thousand Fourteen Stock Incentive Plan - Employee Stock Option
6 Months Ended
Jun. 30, 2023
$ / shares
shares
Number of Shares  
Outstanding beginning balance (in shares) | shares 6,612,554
Granted (in shares) | shares 2,857,665
Exercised (in shares) | shares 0
Canceled/forfeited (in shares) | shares 0
Expired (in shares) | shares 0
Outstanding ending balance (in shares) | shares 9,470,219
Exercisable (in shares) | shares 4,769,873
Weighted Average Exercise Price  
Outstanding beginning balance (in usd per share) | $ / shares $ 1.60
Granted (in usd per share) | $ / shares 1.13
Exercised (in usd per share) | $ / shares
Canceled/forfeited (in usd per share) | $ / shares
Expired (in usd per share) | $ / shares
Outstanding ending balance (in usd per share) | $ / shares 1.46
Exercisable (in usd per share) | $ / shares $ 1.50