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Investments and Fair Value Measurements - Ampreloxetine Funding (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2024
Jul. 31, 2022
Ampreloxetine Royalty Rights    
Development and Collaboration Agreement    
Milestone payments   $ 15.0
Carrying amount of the liability   25.0
Percent of effective interest rate 8.30%  
Ampreloxetine Funding    
Development and Collaboration Agreement    
Consideration Receivable at closing   $ 25.0