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Significant Accounting Policies - Additional Information (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 USD ($) InvesteeCompany DebtInvestment | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) InvesteeCompany DebtInvestment
Purchase of investments | $ 37,188 | $ 13,279 |
Repayments and sales of investments | 35,481 | 45,793 |
Net deployment amount of investment | $ 1,700 | $ 32,500 |
Number of investee companies where loans held | InvesteeCompany | 79 |  | 80
Aggregate principal amount of loans held | $ 430,400 |  | $ 420,900
Percentage of investment portfolio valuation | 100.00% |  |
Number of debt investments on non-accrual status | DebtInvestment | 7 |  | 7
Investments at fair value, amortized cost | $ 543,601 |  | $ 540,282
Aggregate amortized cost of debt investments on non-accrual status | 17,100 |  | 17,300
Investment at fair value | 471,255 |  | 467,865
Aggregate fair value of debt investments on non-accrual status | $ 2,200 |  | $ 6,100
Percentage of investments in non-accrual status at amortized cost | 3.20% |  | 3.20%
Percentage of investments in non-accrual status at fair value | 0.50% |  | 1.30%

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