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Summary of Significant Accounting Policies - Components of the Company's Investment Income (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Accounting Policies [Abstract] |  |
Interest income | $ 11,662 | $ 12,524
PIK interest income | 2,115 | 2,272
Dividend income | 1,012 | 1,095
Fee income | 37 |
Fee income |  | 310
Prepayment gain (loss) | 105 | 243
Accretion of discounts and amortization of premiums | 251 | 360
Total investment income | 15,182 | 16,804
PIK dividends | $ 113 | $ 128

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