Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Accrued interest receivable excluded from fair value and amortized cost basis of available for sale securities	$ 5,300		$ 5,300		$ 4,000
Write off of accrued interest receivable			0	$ 0
Total net unrealized gains recorded in accumulated other comprehensive income (loss)			3,000		900
Equity investment at fair value	5,500		5,500
Unrealized gain (loss) on equity securities	1,130	$ (2,707)	(4,356)	$ (20,896)
Humabs
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Estimated fair value of contingent consideration	$ 33,200		$ 33,200		$ 26,000
Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities contractual term	2 years		2 years