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Contingent Consideration - Narrative (Details)
$ / shares in Units, $ in Thousands
3 Months Ended
Nov. 24, 2021
USD ($)
right
$ / shares
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Business Acquisition [Line Items]      
Change in fair value recognized in earnings   $ (1,647) $ 665
Milestone payments     25,000
Payment for contingent consideration liability, financing activities   0 22,900
Payment for contingent consideration liability, operating activities     2,100
USWM Acquisition      
Business Acquisition [Line Items]      
Additional cash payments upon milestone achievements maximum   85,000  
Change in fair value recognized in earnings   (1,710) 1,720
Milestone payments     25,000
USWM Acquisition | SPN-30 Regulatory and Commercial Activities      
Business Acquisition [Line Items]      
Additional cash payments upon milestone achievements maximum   55,000  
USWM Acquisition | SPN-830 NDA Approval Milestone      
Business Acquisition [Line Items]      
Additional cash payments upon milestone achievements maximum   25,000  
USWM Acquisition | APOKYN and SPN-830      
Business Acquisition [Line Items]      
Additional cash payments upon milestone achievements maximum   30,000  
USWM Acquisition | Subsequent Commercial Product Launch      
Business Acquisition [Line Items]      
Additional cash payments upon milestone achievements maximum   30,000  
Adamas Acquisition      
Business Acquisition [Line Items]      
Additional cash payments upon milestone achievements maximum $ 50,900    
Change in fair value recognized in earnings   $ 63 (1,055)
Contingents value rights | right 2    
Contingent consideration arrangements, value (in dollars per share) | $ / shares $ 0.50    
Additional cash payments upon milestone achievements minimum $ 0    
Milestone payments     $ 0
Adamas Acquisition | The Milestones      
Business Acquisition [Line Items]      
Contingent consideration arrangements, excess acquisition date fair value $ 225,000    
Contingent consideration arrangements, excess acquisition date fair value, term 12 months    
Adamas Acquisition | Milestone 2024      
Business Acquisition [Line Items]      
Contingent consideration arrangements, excess acquisition date fair value $ 150,000    
Contingent consideration arrangements, excess acquisition date fair value, term 12 months