v3.26.1
Significant changes in the current reporting period (Details)
$ / shares in Units, $ in Thousands
 6 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
Feb. 28, 2026
shares
Disclosure of objectives, policies and processes for managing capital [line items]      
Termination benefit liability | $ $ 1,400    
Gross proceeds from equity offering | $ 164,600 $ 82,481  
Senior Term Loan Facility      
Disclosure of objectives, policies and processes for managing capital [line items]      
Borrowing facilities, maximum borrowing capacity | $ $ 75,000    
Cash interest, payable percentage 0.125    
Treasury shares | Alvotech Manco ehf.      
Disclosure of objectives, policies and processes for managing capital [line items]      
Number of shares issued (in shares)     12,500,000
Ordinary Shares      
Disclosure of objectives, policies and processes for managing capital [line items]      
Number of shares issued (in shares) 43,893,333    
Ordinary Shares | Public Stock Offering      
Disclosure of objectives, policies and processes for managing capital [line items]      
Number of shares issued (in shares) 26,066,667    
Price per share (in dollars per share) | $ / shares $ 3.75    
Ordinary Shares | Private Placement      
Disclosure of objectives, policies and processes for managing capital [line items]      
Number of shares issued (in shares) 17,826,666    
Price per share (in dollars per share) | $ / shares $ 3.75