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Distributions - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 06, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2023
Class of Stock [Line Items] |  |  |  |  |  |  |
Distributions per share (in dollars per share) |  | $ 0.34 | $ 0.54 | $ 0.39 | $ 0.34 | $ 0.34 | $ 1.61
Percentage of market price |  | 95.00% |  |  |  |  |
Aggregate gross unrealized appreciation |  | $ 60,134 | $ 71,010 |  |  |  | $ 71,010
Aggregate gross unrealized depreciation |  | 158,114 | 145,443 |  |  |  | 145,443
Cumulative gross unrealized appreciation (depreciation) for federal income tax purposes |  | (97,980) | (74,433) |  |  |  | (74,433)
Aggregate cost of securities for federal income tax |  | $ 1,968,817 | $ 2,028,711 |  |  |  | $ 2,028,711
Payable on June 17, 2024 | Subsequent Event |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Distributions per share (in dollars per share) | $ 0.36 |  |  |  |  |  |

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