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Debt - 2018 Purchase Agreement and Indenture for Scilex - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 07, 2018
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Debt Instrument [Line Items]            
Loss on debt extinguishment, net   $ 0 $ 0 $ 6,695,000 $ 51,939,000  
Senior Notes | Scilex Pharmaceuticals, Inc | Senior Secured Notes, Due 2026            
Debt Instrument [Line Items]            
Face value of loan $ 224,000,000.0 $ 107,684,000   107,684,000   $ 151,872,000
Proceeds from issuance of senior long-term debt $ 140,000,000.0          
Aggregate principal amount repurchased           $ 65,000,000.0
Additional principal amount repurchased       40,000,000.0    
Loss on debt extinguishment, net       14,000,000.0    
Principal payments       $ 44,200,000 3,500,000  
Debt instrument, interest rate, effective percentage   10.40%   10.40%    
Amount of debt discount and debt issuance included in interest expense   $ 1,900,000 $ 2,500,000 $ 5,900,000 $ 8,200,000