v3.26.1
FINANCIAL HIGHLIGHTS (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]                
NAV as of the beginning of the period (in dollars per share)     $ 15.85 $ 15.53        
Net investment income (in dollars per share)     0.62 0.70        
Net realized gain (loss) (in dollars per share)     0.21 (0.36)        
Net unrealized appreciation (in dollars per share)     0.14 0.33        
Income tax benefit (provision) on net realized gain (loss) and net unrealized appreciation (in dollars per share)     (0.04) 0.03        
Net increase in net assets resulting from operations (in dollars per share)     0.93 0.70        
Dividends paid from net investment income (in dollars per share)     (0.36) (0.72)        
Distributions paid or accrued (in dollars per share)     (0.36) (0.72)        
Accretive effect of stock repurchases (repurchasing shares below NAV per share) (in dollars per share)     0.10 0        
Dilutive effect of stock offerings (issuing shares below NAV per share) (in dollars per share)     0 (0.16)        
Other (in dollars per share)     (0.01) (0.02)        
NAV as of the end of the period (in dollars per share) $ 16.51 $ 15.33 16.51 15.33        
Market value as of the end of the period (in dollars per share) $ 11.57 $ 16.43 $ 11.57 $ 16.43        
Shares outstanding as of the end of the period (in shares) 45,345,229 47,148,802 45,345,229 47,148,802        
NAV as of the end of the period $ 748,800 $ 722,788 $ 748,800 $ 722,788 $ 719,528 $ 738,659 $ 718,940 $ 624,903
Average NAV     735,662 688,877        
Average outstanding debt     $ 647,571 $ 534,964        
Ratios to average NAV:                
Ratio of total expenses, including tax expenses, to average NAV (as a percent)     5.90% 5.12%        
Ratio of operating expenses to average NAV (as a percent)     5.32% 5.05%        
Ratio of operating expenses excluding interest expense, to average NAV (as a percent)     2.77% 2.59%        
Ratio of operating expenses, excluding interest expense and incentive fees, net of waivers, to average NAV (as a percent)     1.78% 1.80%        
Ratio of net investment income to average NAV (as a percent)     3.84% 4.65%        
Portfolio turnover ratio (as a percent)     8.67% 11.97%        
Total investment return (as a percent)     (7.05%) 10.78%        
Total return based on change in NAV (as a percent)     5.75% 5.15%        
Waiver of incentive fee on income $ 258 $ 0 $ 1,243 $ 0        
Purchase of stock at the public offering price (in dollars per share)   $ 15.53   $ 15.53        
Investment Company, Ratio To Average Net Assets Excluding Expense Waivers                
Ratio of total expenses, including tax expenses, to average NAV (as a percent)     6.07%          
Ratio of operating expenses to average NAV (as a percent)     5.50%          
Ratio of operating expenses, excluding interest expense, to average NAV (as a percent)     2.94%          
Ratio of operating expenses, excluding interest expense and incentive fees, to average NAV (as a percent)     0.0195          
Ratio of net investment income to average NAV (as a percent)     3.67%