v3.26.1
Agreements and Related Party Transactions - Additional Information (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2020
Apr. 15, 2011
Nov. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Related Party Transaction [Line Items]              
Management fees       $ 12,960,000 $ 12,918,000 $ 25,553,000 $ 26,001,000
Administration Agreement              
Related Party Transaction [Line Items]              
Agreement termination period     60 days        
Administration Agreement | Adviser | Location, Statement of Income, Balance [Axis]: us-gaap:OtherGeneralAndAdministrativeExpense              
Related Party Transaction [Line Items]              
Expenses incurred       1,200,000 800,000 2,100,000 1,700,000
Investment Advisory Agreement              
Related Party Transaction [Line Items]              
Agreement termination period     60 days        
Percentage of management fee on gross assets   1.50%          
Management fees       13,000,000 12,900,000 25,600,000 26,000,000
Percentage of excess pre-incentive fee net investment income for immediate preceding calendar quarter   100.00%          
Percentage of hurdle rate   1.50%          
Percentage of total pre-Incentive fee net investment income payable quarterly   17.50%          
Percentage of excess pre-Incentive Fee net investment income quarterly   1.82%          
Percentage of all remaining pre-Incentive Fee net investment income quarterly   17.50%          
Percentage of excess catch-up provision for pre-Incentive Fee net investment income   100.00%          
Percentage of all pre-Incentive Fee net investment income   17.50%          
Percentage of pre-Incentive Fee net investment income annualized   7.28%          
Percentage of excess pre-Incentive Fee net investment income   17.50%          
Percentage of pre-Incentive Fee net investment income payable in any quarter   1.82%          
Percentage of weighted cumulative realized capital gains less cumulative realized capital losses and unrealized capital losses   15.00%          
Incentive fees       8,700,000 12,500,000 17,100,000 20,400,000
Incentive fees realized and payable to advisor       8,700,000 11,100,000 17,100,000 22,600,000
Incentive fees accrued related to expense (reversal) of capital gains fees       0 1,400,000 0 (2,200,000)
Investment Advisory Agreement | Capital Gains Accrue Following March 31, 2014              
Related Party Transaction [Line Items]              
Percentage of incentive fee rate   17.50%          
Investment Advisory Agreement | Realized Capital Gains Accrued Prior to March 31, 2014              
Related Party Transaction [Line Items]              
Percentage of incentive fee rate   15.00%          
Investment Advisory Agreement | Realized Capital Gains Accrued Beginning April 1, 2014              
Related Party Transaction [Line Items]              
Percentage of incentive fee rate   17.50%          
Investment Advisory Agreement | Future Realized Capital Gains Prior to April 1, 2014              
Related Party Transaction [Line Items]              
Remaining investments $ 0            
Incentive fee rate 17.50%            
Investment Advisory Agreement | Leverage Waiver              
Related Party Transaction [Line Items]              
Management fees       $ 500,000 $ 300,000 $ 800,000 $ 700,000
Percentage of asset coverage   200.00%          
Percentage of management fee in excess of annual rate on gross assets   1.00%          
Percentage of management fee in excess of quarter rate on gross assets   0.25%