v3.25.2
Financial Highlights and Senior Securities (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Investment Company, Financial Highlights [Roll Forward]                
Net asset value, beginning of period (in usd per share)     $ 27.39 $ 26.66        
Net investment income, basic (in usd per share) $ 0.77 $ 0.89 1.60 1.76        
Net change in unrealized and realized gain (loss) (in usd per share)     (0.26) 0.21        
Net increase (decrease) in net assets resulting from operations (in usd per share)     1.34 1.97        
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)     0.14 0.10        
Total increase (decrease) in net assets (in usd per share)     (0.06) 0.53        
Net asset value, ending of period (in usd per share) 27.33 27.19 27.33 27.19        
Market value, end of period (in usd per share) $ 30.75 $ 30.62 $ 30.75 $ 30.62        
Shares outstanding end of period (in shares) 230,055,444 198,381,800 230,055,444 198,381,800   221,892,184    
Total return based on NAV     5.10% 7.30%        
Total return based on market value     0.20% 16.80%        
Ratios:                
Ratio of net expenses to average net assets     10.60% 11.10%        
Ratio of net investment income to average net assets     11.70% 12.90%        
Portfolio turnover rate     8.90% 2.60%        
Supplemental Data:                
Net assets, end of period $ 6,288,296 $ 5,394,573 $ 6,288,296 $ 5,394,573 $ 6,240,869 $ 6,076,521 $ 5,155,665 $ 4,952,041
Asset coverage ratio 188.50% 188.30% 188.50% 188.30%   185.70%    
Ratio of expenses to average net assets, before waivers     10.60% 11.10%