v3.26.1
Financial Highlights - Summary of Financial Highlights (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Sep. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Investment Company, Financial Highlights [Abstract]                
Net asset value, beginning of period     $ 7.11 $ 7.56        
Net investment income $ 0.14 $ 0.18 0.39 [1] 0.55 [1]        
Net change in realized and unrealized gain (loss) [1]     (0.22) (0.04)        
Net increase (decrease) in net assets resulting from operations [1],[2]     0.17 0.52        
Distributions to stockholders [1],[3]     (0.72) (0.72)        
Net asset value, end of period 6.56 7.36 6.56 7.36        
Per share market value, end of period $ 3.47 $ 6.84 $ 3.47 $ 6.84        
Total return [4],[5]     (40.17%) 8.58%        
Shares outstanding at end of period 65,296,094 65,296,094 65,296,094 65,296,094        
Ratios** / Supplemental Data:                
Ratio of operating expenses to average net assets [6],[7]     6.05% 7.24%        
Ratio of debt related expenses to average net assets [6],[8]     8.98% 8.57%        
Ratio of total expenses to average net assets [6],[8]     15.03% 15.81%        
Ratio of net investment income to average net assets [6],[8]     7.74% 9.87%        
Net assets at end of period $ 428,032 $ 480,585 $ 428,032 $ 480,585 $ 439,234 $ 463,950 $ 488,106 $ 493,908
Weighted average debt outstanding     $ 634,628 $ 690,420        
Weighted average debt per share [1]     $ 9.72 $ 10.57        
Asset coverage per unit [9] $ 1,779 $ 1,761 $ 1,779 $ 1,761        
Portfolio turnover ratio [5],[10]     29.11% 49.84%        
[1] Based on the weighted average shares outstanding for the respective periods.
[2] The nine months ended June 30, 2025 does not foot due to rounding.
[3] The tax status of distributions is calculated in accordance with income tax regulations, which may differ from amounts determined under GAAP, and reported on Form 1099-DIV each calendar year.
[4] Based on the change in market price per share during the periods and assumes distributions, if any, are reinvested.
[5] Not annualized for periods less than one year.
[6] Re-occurring investment income and expenses included in these ratios are annualized for periods less than one year.
[7] Total expenses excluding debt-related costs.
[8] Includes interest and expenses on debt (annualized) as well as the Truist Credit Facility amendment, debt issuance costs and excludes debt extinguishments cost, if any, (not annualized).
[9] The asset coverage ratio for a class of senior securities representing indebtedness is calculated as our consolidated total assets, less all liabilities and indebtedness not represented by senior securities, divided by the senior securities representing indebtedness at par (changed from fair value). This asset coverage ratio is multiplied by $1,000 to determine the asset coverage per unit.
[10] Excludes short-term U.S. Government Securities.