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Significant Accounting Policies - Additional Information (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) DebtInvestment InvesteeCompany | Dec. 31, 2023 USD ($) InvesteeCompany DebtInvestment | Dec. 31, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |
Purchase of investments | $ 78,421 | $ 48,188 | $ 222,202
Repayments and sales of investments | 125,695 | 146,945 | $ 160,964
Net repayment and sales amount of investment | $ 47,300 | $ 98,800 |
Number of investee companies where loans held | InvesteeCompany | 71 | 80 |
Aggregate principal amount of loans held | $ 366,100 | $ 420,900 |
Percentage of investment portfolio valuation | 100.00% |  |
Number of debt investments on non-accrual status | DebtInvestment | 6 | 7 |
Aggregate amortized cost of debt investments on non-accrual status | $ 16,300 | $ 17,300 |
Aggregate fair value of debt investments on non-accrual status | $ 6,900 | $ 6,100 |
Percentage of investments in non-accrual status at amortized cost | 3.40% | 3.20% |
Percentage of investments in non-accrual status at fair value | 1.70% | 1.30% |

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