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Basis of Presentation and Summary of Significant Accounting Policies - Schedule Of Goodwill Balance by Segment On Relative Fair Value Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Basis of Presentation [Line Items]    
Goodwill $ 181,206 $ 181,206
Ligand Core Business    
Basis of Presentation [Line Items]    
Goodwill 105,673  
OmniAb Technologies    
Basis of Presentation [Line Items]    
Goodwill $ 75,533