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License Agreements - MorphoSys (Details) $ in Thousands	3 Months Ended		9 Months Ended		45 Months Ended
	Sep. 30, 2023 USD ($) shares	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) shares	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) shares	Dec. 31, 2022 USD ($)	Jan. 31, 2020 USD ($)
License Agreements
Unrealized gain (loss) on long term investments	$ (26,654)	$ (660)	$ 9,839	$ (72,142)
Loss and (profit) sharing under collaboration agreements	1,053	1,769	(858)	9,055
Research and development expense	$ 375,709	384,007	$ 1,183,100	1,084,576
MorphoSys AG
License Agreements
Common stock held from investment (in shares) | shares	3,600,000		3,600,000		3,600,000
Share conversion	0.25		0.25		0.25
Fair market value of our long term investments	$ 24,400		$ 24,400		$ 24,400	$ 13,000
Unrealized gain (loss) on long term investments	(2,700)	800	11,400	(15,900)
MorphoSys AG
License Agreements
Research and development expense	13,000	21,900	58,500	70,400
Accrued and other liabilities	12,400		$ 12,400		12,400	$ 28,500
MorphoSys AG | UNITED STATES
License Agreements
Profit (loss) sharing ratio			50.00%
MorphoSys AG | UNITED STATES | Tafasitamab Product and Service
License Agreements
Loss and (profit) sharing under collaboration agreements	$ 1,100	$ 1,800	$ (900)	$ 9,100
MorphoSys AG | Development and Regulatory Milestones
License Agreements
Milestone payment made under license agreement					$ 2,500
MorphoSys AG | Development and Regulatory Milestones | Maximum
License Agreements
Additional milestone payments under the license agreement							$ 737,500
MorphoSys AG | Commercialization Milestones | Maximum
License Agreements
Additional milestone payments under the license agreement							$ 315,000
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%

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