v3.25.4
Business Interruption Insurance - Additional Information (Details)
$ in Thousands, € in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2024
CAD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
EUR (€)
Unusual or Infrequent Item, or Both [Line Items]          
Business interruption insurance settlement amount $ 0        
Property insurance proceeds $ 0 $ 773   $ 12,203  
Cost of Sales, Excluding Depreciation and Amortization | Celgar mill's lime kiln equipment          
Unusual or Infrequent Item, or Both [Line Items]          
Business interruption insurance settlement amount   1,688 $ 2.3    
Property insurance proceeds   $ 773 $ 1.1    
Cost of Sales, Excluding Depreciation and Amortization | Rosenthal mill's turbine          
Unusual or Infrequent Item, or Both [Line Items]          
Business interruption insurance settlement amount       16,553 € 15.2
Cost of Sales, Excluding Depreciation and Amortization | Stendal Fire          
Unusual or Infrequent Item, or Both [Line Items]          
Business interruption insurance settlement amount       17,665 16.3
Property insurance proceeds       $ 12,203 € 11.2