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License Agreements - MorphoSys (Details) $ / shares in Units, $ in Thousands, € in Millions		1 Months Ended		3 Months Ended		9 Months Ended
	Mar. 03, 2020 USD ($) $ / shares	Mar. 31, 2020 EUR (€)	Jan. 31, 2020 USD ($) $ / shares	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Long term investments				$ 192,096		$ 192,096		$ 222,301
Research and development expense				334,945	$ 438,109	985,352	$ 1,809,997
Unrealized gain (loss) on long term investments				(27,450)	(13,207)	(28,394)	10,935
Collaboration loss sharing				9,149	14,989	29,476	30,372
ADSs
Equity Method Investment, Ownership Percentage			25.00%
Equity Method Investment, Aggregate Cost			$ 150,000
Per share price | $ / shares	$ 27.65		$ 41.33
Lock-up period			18 months
Discount for lack of marketability	$ 4,900
Fair value of shares	95,500
Long term investments	95,500			$ 42,700		$ 42,700		102,900
Research and development expense	$ 54,500
MorphoSys AG
Upfront payment under license agreement | €		€ 750.0
Equity Method Investment, Ownership Percentage				3.00%		3.00%
Research and development expense				$ 21,500	23,800	$ 55,800	51,100
Unrealized gain (loss) on long term investments				(27,300)	900	$ (60,200)	$ 18,500
Profit (loss) sharing ratio						50.00%	50.00%
Collaboration loss sharing				9,100	$ 15,000	$ 29,500	$ 30,400
Associated future global development costs from the initiation of a Phase IIb trial, if elected to co-develop (as a percentage)						55.00%	55.00%
Accrued and other liabilities				$ 52,300		$ 52,300		$ 54,200
MorphoSys AG | Development and Regulatory Milestones | Maximum
Additional milestone payments under the license agreement			$ 740,000
MorphoSys AG | Sales and Commercial Milestones | Maximum
Additional milestone payments under the license agreement			$ 315,000
MorphoSys AG | MorphoSys AG
Funding of future development costs (as a percent)						45.00%
MorphoSys AG | Incyte
Funding of future development costs (as a percent)						55.00%

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