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Stockholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Options Activity
The following table summarizes the Company’s option activity and related information:
Number of
Options
(in thousands)		Weighted-
Average
Exercise Price
Balance at December 31, 20232,303 $48.71 
Options granted1,736 10.85 
Options exercised(14)10.14 
Options forfeited(296)46.42 
Balance at September 30, 20243,729 $31.39 
Exercisable as of September 30, 20241,305 $67.84 
Schedule of Restricted Stock Units Activity
The following table summarizes the Company’s RSUs activity and related information:
Number of Units
(in thousands)		Weighted-
Average Grant-
Date Fair Value
Outstanding at December 31, 2023154 $21.73 
Granted99 15.97 
Vested and released(27)27.14 
Forfeited(21)14.69 
Outstanding at September 30, 2024205 $18.94 
Schedule of Stock-Based Compensation Expense
The following table presents, by operating expense, the Company’s stock-based compensation expense:
Three Months Ended
September 30,		Nine Months Ended
September 30,
2024202320242023
(In thousands)
Research and development$1,086 $1,164 $3,294 $3,925 
General and administrative1,878 3,225 7,781 9,496 
Total stock-based compensation expense$2,964 $4,389 $11,075 $13,421