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Equity Incentive Awards - Summary of Stock Options Activity (Details)
shares in Thousands
 6 Months Ended
Jun. 30, 2023
$ / shares
shares
Number of Options (in thousands)  
Beginning balance (in shares) | shares 19,320
Options granted (in shares) | shares 4,736
Options exercised (in shares) | shares 0
Options forfeited (in shares) | shares (541)
Ending balance (in shares) | shares 23,515
Exercisable (in shares) | shares 8,867
Weighted- Average Grant- Date Fair Value  
Beginning balance (in USD per share) | $ / shares $ 5.79
Options granted (in USD per share) | $ / shares 0.81
Options exercised (in USD per share) | $ / shares 0
Options forfeited (in USD per share) | $ / shares 5.13
Ending balance (in USD per share) | $ / shares 4.80
Exercisable (in USD per share) | $ / shares $ 8.82