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License Agreements - Syros (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Jan. 31, 2018
USD ($)
item
Mar. 31, 2023
USD ($)
shares
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
License Agreements        
Fair market long term investments   $ 128,313   $ 133,676 [1]
Unrealized gain (loss) on long term investments   $ (5,318) $ (46,585)  
Syros Pharmaceuticals, Inc.        
License Agreements        
Common stock held from investment (in shares) | shares   93,753    
Fair market long term investments   $ 300   $ 300
Unrealized gain (loss) on long term investments   $ (100) $ (1,900)  
Syros Pharmaceuticals, Inc.        
License Agreements        
Number of program targets | item 7      
Syros Pharmaceuticals, Inc. | Maximum        
License Agreements        
Target selection and option exercise fee payment $ 54,000      
Syros Pharmaceuticals, Inc. | Maximum | Development and Regulatory Milestones        
License Agreements        
Additional milestone payments under the license agreement 50,000      
Syros Pharmaceuticals, Inc. | Maximum | Commercialization Milestones        
License Agreements        
Additional milestone payments under the license agreement $ 65,000      
[1] The condensed consolidated balance sheet at December 31, 2022 has been derived from the audited consolidated financial statements at that date.