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License Agreements - MorphoSys (Details) $ in Thousands, shares in Millions		1 Months Ended		3 Months Ended		9 Months Ended
	Feb. 05, 2024	May 31, 2024 USD ($) shares	Feb. 05, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
License Agreements
Long term equity investments				$ 27,566		$ 27,566		$ 187,716	[1]
Profit sharing under collaboration agreements				0	$ (1,053)	1,025	$ 858
Research and development				573,174	375,709	2,140,814	1,183,100
MorphoSys AG
License Agreements
Shares divested (in shares) | shares		3.6
Proceeds from sale of equity securities, FV-NI		$ 66,600
Long term equity investments								35,900
Realized gain (loss) on long term investments						30,700
Unrealized gain (loss) on long term investments					$ (2,700)		$ 11,400
ADSs
License Agreements
Share conversion		0.25
MorphoSys AG
License Agreements
Profit (loss) sharing ratio			50.00%		50.00%		50.00%
Research and development			$ 10,700		$ 13,000		$ 58,500
Accrued and other liabilities				$ 0		$ 0		$ 18,800
MorphoSys AG | Tafasitamab Product and Service | UNITED STATES
License Agreements
Profit sharing under collaboration agreements			$ 1,000		$ 1,100		$ 900
MorphoSys AG | MorphoSys AG
License Agreements
Funding of future development costs (as a percent)	45.00%
MorphoSys AG | Incyte
License Agreements
Funding of future development costs (as a percent)	55.00%				55.00%		55.00%
[1] The condensed consolidated balance sheet at December 31, 2023 has been derived from the audited consolidated financial statements at that date.

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