v3.26.3
DESCRIPTION OF BUSINESS (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Jul. 10, 2026
Apr. 03, 2025
May 10, 2024
Apr. 30, 2025
Jun. 30, 2025
Sep. 30, 2025
Sep. 30, 2026
Dec. 31, 2025
DESCRIPTION OF BUSINESS                
Retained earnings (accumulated deficit)             $ 513,440 $ (546,371)
Cash, cash equivalents and marketable securities             $ 1,743,900  
Shares issued   9,935,419            
Share price   $ 20.13            
Gross proceeds       $ 200,000        
Proceeds from issuance of common stock       187,100   $ 187,362    
Underwriting discounts and commissions       12,000        
Offering expenses       $ 900        
Disposed of by sale                
DESCRIPTION OF BUSINESS                
Upfront cash $ 1,396,100              
Proceeds deposited into escrow 153,900              
Consideration $ 1,550,000              
Disposal Group, Not Discontinued Operation, Name [Extensible Enumeration] ewtx:SevasemtenProgramMember              
Additional contingent consideration $ 1,100,000              
Annual net sales milestone payment 300,000              
Annual net sales threshold amount 550,000              
Aggregate potential consideration 2,650,000              
Disposed of by sale | Approval For Becker Muscular Dystrophy, Adult And Adolescent Populations                
DESCRIPTION OF BUSINESS                
Payment on marketing approval 200,000              
Disposed of by sale | Approval For Becker Muscular Dystrophy, Adult Populations                
DESCRIPTION OF BUSINESS                
Payment on marketing approval 100,000              
Disposed of by sale | Approval For Duchenne Muscular Dystrophy                
DESCRIPTION OF BUSINESS                
Payment on marketing approval $ 600,000              
Common Stock                
DESCRIPTION OF BUSINESS                
Shares issued         9,935,419      
At-the-market program | Common Stock | Maximum                
DESCRIPTION OF BUSINESS                
Maximum potential aggregate sales proceeds, sales agreement     $ 175,000