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Apexian Sublicense Agreement (Details) - Apexian Sublicense Agreement [Member] - USD ($)
$ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2020
Sublicense Agreement [Abstract]    
Common stock issued (in shares)   891,422
Development and Regulatory Milestones [Member] | Maximum [Member]    
Sublicense Agreement [Abstract]    
Milestone payments $ 11  
Sales Milestones [Member] | Maximum [Member]    
Sublicense Agreement [Abstract]    
Milestone payments $ 20