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Derivative Instruments - Narrative (Details) - USD ($) | Feb. 25, 2022 | Dec. 23, 2020 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Fair value |  |  | $ (11,264,000) | $ (15,169,000)
Foreign Exchange Contract |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivative asset |  |  | 1,000 | 1,508,000
Fair value |  |  | (11,264,000) | (15,169,000)
Barings LLC | MVC Credit Support Agreement |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Notional Amount |  | $ 23,000,000 | 23,000,000 | 23,000,000
Term of contract |  | 10 years |  |
Derivative asset |  |  | 17,300,000 | 12,386,000
Barings LLC | Sierra Credit Support Agreement |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Notional Amount | $ 100,000,000 |  | 100,000,000 | 100,000,000
Term of contract | 10 years |  |  |
Derivative asset |  |  | $ 40,500,000 | $ 40,700,000

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