v3.25.4
Transactions with Related Parties - Additional Information (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2025
USD ($)
calendarQuarter
component
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
Mar. 31, 2026
$ / shares
Mar. 31, 2025
Transactions with Related Parties          
Base management fees $ 6,821 $ 8,056 $ 8,603    
Administrative agreement service fee 1,483 1,011 940    
Accounts payable and accrued expenses $ 1,283 $ 2,066      
Common stock, par value (in dollars per share) | $ / shares $ 0.001 $ 0.001      
Forecast | HRZN          
Transactions with Related Parties          
Common stock, par value (in dollars per share) | $ / shares       $ 0.001  
Related Party          
Transactions with Related Parties          
Accounts payable $ 0 $ 0      
MC Advisors | Related Party          
Transactions with Related Parties          
Number of components | component 2        
Initial base management fee, percentage 1.75%        
Base management fee, percentage 1.00%        
Percentage of average invested assets 200.00%        
Leverage ratio 1        
Base management fees $ 6,821 8,056 8,603    
Incentive fee payable in arrears, percentage 20.00%        
Incentive fee payable, threshold quarterly hurdle rate 2.00%        
Incentive fee payable, threshold annual hurdle rate 8.00%        
Incentive fee limitation, percentage 20.00%        
Period of preceding calendar quarters | calendarQuarter 11        
Threshold ordinary income incentive fee payable, percentage 20.00%        
Threshold ordinary income incentive fee limitation, percentage 20.00%        
Second part incentive fee payable, percentage 20.00%        
Administrative expenses $ 3,305 2,877 2,833    
Administrative agreement service fee 1,483 1,011 $ 940    
MC Management | Related Party          
Transactions with Related Parties          
Accounts payable and accrued expenses $ 395 $ 284      
Monroe | Wendel SE          
Transactions with Related Parties          
Percentage of equity interest of parent         75.00%