v3.26.1
Financial Highlights and Senior Securities (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Investment Company, Financial Highlights [Roll Forward]                
Net asset value, beginning of period (in usd per share)     $ 26.92 $ 27.39        
Net investment income, basic (in usd per share) $ 0.75 $ 0.77 1.52 1.60        
Net change in unrealized and realized gain (loss) (in usd per share)     (1.37) (0.26)        
Net increase (decrease) in net assets resulting from operations (in usd per share)     0.15 1.34        
Distributions from net investment income (in usd per share)     (1.54) (1.54)        
Net increase (decrease) in net assets from capital share transactions (in usd per share)     0 0.14        
Total increase (decrease) in net assets (in usd per share)     (1.39) (0.06)        
Net asset value, ending of period (in usd per share) 25.53 27.33 25.53 27.33        
Market value, end of period (in usd per share) $ 23.71 $ 30.75 $ 23.71 $ 30.75        
Shares outstanding, end of period 232,652,003 230,055,444 232,652,003 230,055,444   231,969,058    
Total return based on NAV     1.20% 5.10%        
Total return based on market value     (4.20%) 0.20%        
Ratios:                
Ratio of net expenses to average net assets     9.30% 10.60%        
Ratio of net investment income to average net assets     11.50% 11.70%        
Portfolio turnover rate     4.60% 8.90%        
Supplemental Data:                
Net assets, end of period $ 5,938,733 $ 6,288,296 $ 5,938,733 $ 6,288,296 $ 6,099,680 $ 6,245,175 $ 6,240,869 $ 6,076,521
Asset coverage ratio 178.00% 188.50% 178.00% 188.50%   177.10%    
Ratio of expenses to average net assets, before waivers     9.30% 10.60%