Organization - Additional Information (Details) - USD ($) shares in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 29, 2024	Mar. 31, 2024	Jun. 30, 2023	Sep. 30, 2024	Dec. 31, 2023	Aug. 31, 2022
Description Of Organization [Line Items]
Accumulated deficit				$ 1,555,781,000	$ 1,338,091,000
Cash, cash equivalents and marketable securities				199,000,000
Success payment liabilities				12,700,000
Contingent consideration				60,600,000
Over Allotment Option
Description Of Organization [Line Items]
Number of warrants to purchase common stock	12,700
Net proceeds from issuance of common stock	$ 180,000,000			180,000,000
Common Stock
Description Of Organization [Line Items]
Aggregate common stock sold		21,773
Common Stock | At The Market Offering
Description Of Organization [Line Items]
Aggregate common stock sold		150	4,586
Common Stock | Underwritten Public Offering
Description Of Organization [Line Items]
Aggregate common stock sold	21,800
Common Stock | Underwriters' Option To Purchase Additional Shares
Description Of Organization [Line Items]
Aggregate common stock sold	4,500
Pre Funded Warrants [Member] | Over Allotment Option
Description Of Organization [Line Items]
Number of warrants to purchase common stock	12,700
Cowen | At The Market Offering
Description Of Organization [Line Items]
Common stock maximum aggregate offering price						$ 150,000,000
Net proceeds from issuance of common stock				$ 28,600,000
Aggregate common stock sold				4,900