Consolidated Statements of Assets And Liabilities (Parenthetical) - USD ($) $ in Thousands |
Sep. 30, 2025 |
Dec. 31, 2024 |
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|---|---|---|---|---|---|
| Investment owned, at cost | $ 2,138,238 | $ 2,039,566 | [1] | ||
| Cash equivalents at cost | 373,030 | 397,510 | |||
| Debt instrument, face amount | 1,147,436 | 1,041,093 | |||
| Debt issuance costs | $ 8,474 | $ 9,399 | |||
| Common stock, par or stated value per share | $ 0.01 | $ 0.01 | |||
| Common stock, shares authorized | 200,000,000 | 200,000,000 | |||
| Common stock, shares, issued | 54,554,634 | 54,554,634 | |||
| Common stock, shares, outstanding | 54,554,634 | 54,554,634 | |||
| Companies less than 5% owned [Member] | |||||
| Investment owned, at cost | $ 1,119,909 | $ 1,019,357 | |||
| Companies 5% to 25% owned [Member] | |||||
| Investment owned, at cost | 107,962 | 103,655 | |||
| Companies more than 25% owned [Member] | |||||
| Investment owned, at cost | $ 910,367 | $ 916,554 | |||
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