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Financial Highlights - Schedule of Financial Highlights (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Investment Company, Financial Highlights [Line Items] |  |  |  |
Net asset value at beginning of period |  |  | $ 19.33 | $ 19.37
Net investment income |  |  | 1.55 | 1.74
Net realized gain (loss) on investments, net of tax (provision) |  |  | 0.07 | 0.34
Net unrealized appreciation (depreciation) on investments |  |  | 0.23 | (0.17)
Realized losses on extinguishment of debt |  |  | (0.02) | (0.02)
Total increase from investment operations |  |  | 1.83 | 1.89
Accretive (dilutive) effect of share issuances and repurchases |  |  | 0.08 |
Dividends declared to stockholders |  |  | (1.65) | (1.81)
Other |  |  | (0.03) | (0.03)
Net asset value at end of period | $ 19.56 | $ 19.42 | 19.56 | 19.42
Market value at end of period | $ 20.26 | $ 19.6 | $ 20.26 | $ 19.6
Shares outstanding at end of period | 36,347,868 | 33,914,652 | 36,347,868 | 33,914,652
Weighted average number of shares outstanding - basic | 35,721,635 | 33,380,480 | 34,991,361 | 32,138,865
Weighted average number of shares outstanding - diluted | 35,721,635 | 33,380,480 | 34,991,361 | 32,138,865
Net assets at end of period | $ 711,034 | $ 658,761 | $ 711,034 | $ 658,761
Average net assets | $ 684,232 | $ 625,835 | $ 684,232 | $ 625,835
Total expenses |  |  | 11.90% | 11.50%
Net investment income |  |  | 10.60% | 11.90%
Total return based on market value |  |  | 0.40% | 9.10%
Total return based on net asset value |  |  | 9.50% | 9.80%
Portfolio turnover ratio |  |  | 23.60% | 19.70%
Weighted average debt outstanding |  |  | $ 531,127 | $ 462,275
Weighted average debt per share |  |  | $ 15.18 | $ 14.38

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