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Share-based Compensation Expense (Tables)
9 Months Ended
Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Share Based Compensation Expense
Share-based compensation expense recorded as research and development expenses, general and administrative expenses and capitalized is as follows (in thousands):
Three Months Ended September 30,
Nine Months Ended September 30,
2023202220232022
Research and development$1,525 $1,831 $4,982 $4,802 
General and administrative1,335 1,506 2,947 3,797 
Capitalized— 19 — 
Total share-based compensation$2,864 $3,337 $7,948 $8,599