v3.25.4
Financial Highlights (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Investment Company, Financial Highlights [Roll Forward]          
Net asset value, beginning balance (in dollars per share) $ 10.44 $ 10.50 $ 10.29 $ 10.63 $ 10.85
Net investment income (in dollars per share) 1.11 1.29 1.32 1.02 1.19
Net realized and unrealized (losses) gains (in dollars per share) (0.22) (0.05) 0.21 (0.36) (0.32)
Net increase in net assets resulting from operations (in dollars per share) 0.89 1.24 1.53 0.66 0.87
Distributions declared to stockholders from net investment income (in dollars per share) (1.03) (1.27) (1.31) (0.96) (1.09)
Distributions declared to stockholders from realized gains (in dollars per share) (0.04) (0.03) (0.01) (0.04) 0
Return of capital distributions declared to stockholders (in dollars per share) (0.03) 0 0 0 0
Net asset value, ending balance (in dollars per share) $ 10.23 $ 10.44 $ 10.50 $ 10.29 $ 10.63
Total return (as a percent) 8.89% 12.29% 15.57% 6.47% 8.35%
Shares outstanding at end of period (in shares) 95,740,093 94,236,672 82,381,922 73,750,032 67,739,484
Average weighted shares outstanding for the period (in shares) 94,581,881 90,094,782 79,577,910 71,995,717 42,261,286
Average net assets for the period $ 979,110 $ 945,247 $ 824,216 $ 757,628 $ 455,283
Ratio to average net assets:          
Net investment income (as a percent) 10.71% 12.30% 12.76% 9.66% 11.08%
Total expenses, before waivers (as a percent) 4.63% 5.15% 4.82% 3.44% 2.66%
Total expenses, net of waivers (as a percent) 4.63% 5.15% 4.82% 3.44% 2.66%
Asset coverage ratio (as a percent) 270.76% 295.03% 299.41% 292.41% 326.45%
Portfolio turnover (as a percent) 24.79% 25.10% 9.18% 17.29% 33.65%
Capital Commitments $ 690,000 $ 690,000 $ 690,000 $ 690,000 $ 690,000
Funded Capital Commitments $ 690,000 $ 690,000 $ 690,000 $ 690,000 $ 690,000
% of Capital Commitments funded 100.00% 100.00% 100.00% 100.00% 100.00%
Investment company, effect of capital transactions, per share (in dollars per share) $ 0.00 $ 0.00 $ 0.00 $ 0.00 $ (0.10)
Distributions declared to stockholders from realized gains (in dollars per share) $ (0.04) $ (0.03) $ (0.01) $ (0.04) $ 0
Wells Subscription Line | Revolving Credit Facility | Line of Credit          
Ratio to average net assets:          
Average debt outstanding         $ 4,071
Wells Credit Facility | Revolving Credit Facility | Line of Credit          
Ratio to average net assets:          
Average debt outstanding $ 465,645 $ 446,701 $ 384,168 $ 382,837 $ 205,759