v3.26.1
Financing Arrangements - Outstanding Financing Arrangements (Details)
€ in Thousands, £ in Thousands, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Jun. 30, 2026
EUR (€)
Jun. 30, 2026
GBP (£)
Dec. 31, 2025
EUR (€)
Dec. 31, 2025
GBP (£)
Jun. 30, 2025
Debt Instrument [Line Items]              
Amount Outstanding $ 572,938 $ 604,062          
Amount Available $ 752,062 $ 120,938          
Effective interest rate percentage 5.95%   5.95% 5.95%     6.88%
Revolving Credit Facility | Line of Credit | Senior Secured Revolving Credit Facility              
Debt Instrument [Line Items]              
Basis spread on variable rate 2.125% 2.125%          
Amount Outstanding $ 123,438 $ 246,562 € 45,000 £ 35,500 € 46,450 £ 35,000  
Amount Available $ 201,562 $ 78,438          
Floor on benchmark rate 0.00% 0.00%          
Revolving Credit Facility | Line of Credit | Senior Secured Revolving Credit Facility | Euro Member Countries, Euro              
Debt Instrument [Line Items]              
Exchange rate 1.14 1.17 1.14 1.14 1.17 1.17  
Revolving Credit Facility | Line of Credit | Senior Secured Revolving Credit Facility | United Kingdom, Pounds              
Debt Instrument [Line Items]              
Exchange rate 1.33 1.34 1.33 1.33 1.34 1.34  
Revolving Credit Facility | Line of Credit | K-FITS Eiffel-1 Credit Facility              
Debt Instrument [Line Items]              
Basis spread on variable rate 1.95% 1.95%          
Amount Outstanding $ 349,000 $ 357,500          
Amount Available $ 251,000 $ 42,500          
Effective interest rate percentage 0.50% 0.50% 0.50% 0.50% 0.50% 0.50%  
Revolving Credit Facility | Line of Credit | K-FITS Eiffel-1 Credit Facility | Minimum              
Debt Instrument [Line Items]              
Basis spread on variable rate 1.95% 1.95%          
Revolving Credit Facility | Line of Credit | K-FITS Eiffel-1 Credit Facility | Maximum              
Debt Instrument [Line Items]              
Basis spread on variable rate 2.15% 2.15%          
Revolving Credit Facility | Line of Credit | K-FITS Mount Royal Credit Facility              
Debt Instrument [Line Items]              
Basis spread on variable rate 1.60%            
Amount Outstanding $ 100,500            
Amount Available $ 299,500            
Floor on benchmark rate 0.00%            
Effective interest rate percentage 0.25%   0.25% 0.25%      
Revolving Credit Facility | Line of Credit | K-FITS Mount Royal Credit Facility | Minimum              
Debt Instrument [Line Items]              
Basis spread on variable rate 1.60%