Segment Reporting - Summary of the Company's segment expenses (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Personnel Related Costs Excluding Stock Based Compensation		$ 4,549	$ 5,732
Other G&A Expenses		2,706	1,849
Interest (Income) Expense, Net		(371)	(180)
Other segment items	[1]	771	(15,000)
Total Segment Net Loss		11,031	(1,029)
Bempikibart [Member]
Segment Reporting Information [Line Items]
Other Research And Development Expense		2,764	5,261
ADXZeroNineSeven [Member]
Segment Reporting Information [Line Items]
Other Research And Development Expense		569	1,084
DiscoveryAndOther [Member]
Segment Reporting Information [Line Items]
Other Research And Development Expense		$ 43	$ 225

[1] Other segment items are included in order to reconcile to total segment net (gain) loss. Other segment items include non-cash items such as depreciation and amortization expense and stock-based compensation expense, gains and losses on the change in fair value of convertible notes, change in fair value of contingent value rights and loss from equity method investment.