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Derivative Instruments - Fair Value and Aggregate Unrealized Depreciation (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Feb. 25, 2022 USD ($) | Dec. 23, 2020 USD ($)
MVC Credit Support Agreement |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Net unrealized (appreciation) depreciation | $ 3,700,000 | $ (1,214,000) |  |
Sierra Credit Support Agreement |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Net unrealized (appreciation) depreciation | (3,900,000) | (3,700,000) |  |
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
Fair Value | 17,300,000 | 12,386,000 |  |
Net unrealized (appreciation) depreciation | 3,700,000 | (1,214,000) |  |
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 |
Fair Value | 40,500,000 | 40,700,000 |  |
Net unrealized (appreciation) depreciation | $ (3,900,000) | $ (3,700,000) |  |
Barings LLC | Sierra Credit Support Agreement | Weighted Average | Enterprise Value | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 79,900 | 201,800 |  |
Barings LLC | Sierra Credit Support Agreement | Weighted Average | Asset Volatility | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 0.425 | 0.538 |  |
Barings LLC | Sierra Credit Support Agreement | Weighted Average | Time Until Exit (years) | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 4.1 | 4.6 |  |
Barings LLC | Sierra Credit Support Agreement | Weighted Average | Recovery Rate | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 0.350 | 0.350 |  |
Barings LLC | Sierra Credit Support Agreement | Minimum | Enterprise Value | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 91 | 100 |  |
Barings LLC | Sierra Credit Support Agreement | Minimum | Asset Volatility | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 0.350 | 0.375 |  |
Barings LLC | Sierra Credit Support Agreement | Minimum | Time Until Exit (years) | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 0 | 0.0 |  |
Barings LLC | Sierra Credit Support Agreement | Minimum | Recovery Rate | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 0.000 | 0.000 |  |
Barings LLC | Sierra Credit Support Agreement | Maximum | Enterprise Value | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 159,700 | 403,500 |  |
Barings LLC | Sierra Credit Support Agreement | Maximum | Asset Volatility | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 0.500 | 0.700 |  |
Barings LLC | Sierra Credit Support Agreement | Maximum | Time Until Exit (years) | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 8.1 | 9.1 |  |
Barings LLC | Sierra Credit Support Agreement | Maximum | Recovery Rate | Simulation Analysis |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Measurement input | 0.700 | 0.700 |  |

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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