v3.25.2
Long-term debt (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Jul. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Jan. 05, 2027
Dec. 01, 2025
Dec. 31, 2024
2023 Amended Facility                
Long-term Debt                
Repayments of long term lines of credit $ 50.0              
Outstanding debt 100.0              
Back-end fees paid $ 3.1              
2024 Amended Facility                
Long-term Debt                
Outstanding debt   $ 50.0   $ 50.0        
Interest rate (as a percent)   7.95%   7.95%        
Variable interest rate basis       7.95%        
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]       us-gaap:PrimeRateMember        
Discount rate (as a percent)   3.25%   3.25%        
Amortized cost net of discount and debt issuance costs   $ 52.3   $ 52.3       $ 51.9
Foreign currency gain   4.3   6.4        
Foreign currency loss     $ 0.7   $ 3.0      
Interest expense recorded   $ 1.8 $ 3.7 $ 3.6 $ 7.4      
2024 Amended Facility | Forecast                
Long-term Debt                
Back-end fees           $ 0.6 $ 2.4  
Venture debt loan facility | 2024 Amended Facility                
Long-term Debt                
Minimum percentage of cash and cash equivalents required to keep in U.S. bank accounts       30.00%        
Assets pledged to secure facilities by directly or indirectly       $ 584.9        
Assets not being pledged to secure facilities by directly or indirectly       69.7        
Venture debt loan facility | 2024 Amended Facility | uniQure France                
Long-term Debt                
Assets not being pledged to secure facilities by directly or indirectly       $ 89.8        
Venture debt loan facility | 2024 Amended Facility | Maximum                
Long-term Debt                
Minimum percentage of cash and cash equivalents required to keep in U.S. bank accounts       100.00%        
Venture debt loan facility | 2024 Amended Facility | Minimum                
Long-term Debt                
Minimum percentage of cash and cash equivalents required to keep in U.S. bank accounts       65.00%