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Fair Value Measurements - Summary of Significant Unobservable Inputs by Valuation Technique to Determine Fair Value (Details) $ in Thousands | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value | $ 405,036 | $ 368,817
Level 3 | Enterprise Value | EBITDA Multiples |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Investments, Equity Fair Value | 118,670 | 111,808
Equity Investments, Warrants fair value | $ 3,576 | $ 1,949
Level 3 | Enterprise Value | EBITDA Multiples | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Investments, Equity, Range | 4 | 4
Equity investments, Warrants range | 6 | 6
Level 3 | Enterprise Value | EBITDA Multiples | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Investments, Equity, Range | 28 | 16.8
Equity investments, Warrants range | 6 | 6
Level 3 | Enterprise Value | EBITDA Multiples | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Investments, Equity, Range | 9.2 | 8.1
Equity investments, Warrants range | 6 | 6
Level 3 | Enterprise Value | Revenue Multiples |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Investments, Equity Fair Value | $ 6,311 | $ 5,623
Equity Investments, Warrants fair value |  | $ 130
Level 3 | Enterprise Value | Revenue Multiples | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Investments, Equity, Range | 0.8 | 0.9
Equity investments, Warrants range | 4 | 4.5
Level 3 | Enterprise Value | Revenue Multiples | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Investments, Equity, Range | 7.5 | 7.8
Equity investments, Warrants range | 4 | 4.5
Level 3 | Enterprise Value | Revenue Multiples | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Equity Investments, Equity, Range | 6.2 | 6.4
Equity investments, Warrants range | 4 | 4.5
Level 3 | Subordinated Debt | Discounted Cash Flow | Weighted Average Cost of Capital |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value | $ 120,782 | $ 97,706
Level 3 | Subordinated Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.102 | 0.10
Level 3 | Subordinated Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.20 | 0.152
Level 3 | Subordinated Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.133 | 0.125
Level 3 | Subordinated Debt | Enterprise Value | EBITDA Multiples |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value | $ 199 | $ 3,750
Level 3 | Subordinated Debt | Enterprise Value | EBITDA Multiples | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 6 | 8.5
Level 3 | Subordinated Debt | Enterprise Value | EBITDA Multiples | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 6 | 8.5
Level 3 | Subordinated Debt | Enterprise Value | EBITDA Multiples | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 6 | 8.5
Level 3 | First Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value | $ 507,098 | $ 441,830
Level 3 | First Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.094 | 0.089
Level 3 | First Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.227 | 0.219
Level 3 | First Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.16 | 0.155
Level 3 | First Lien Debt | Enterprise Value | Asset Coverage |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value | $ 12,416 | $ 11,000
Level 3 | First Lien Debt | Enterprise Value | Asset Coverage | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 1.1 | 1.1
Level 3 | First Lien Debt | Enterprise Value | Asset Coverage | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 1.1 | 1.1
Level 3 | First Lien Debt | Enterprise Value | Asset Coverage | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 1.1 | 1.1
Level 3 | First Lien Debt | Enterprise Value | EBITDA Multiples |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value | $ 2,775 |
Level 3 | First Lien Debt | Enterprise Value | EBITDA Multiples | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 4.3 |
Level 3 | First Lien Debt | Enterprise Value | EBITDA Multiples | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 4.3 |
Level 3 | First Lien Debt | Enterprise Value | EBITDA Multiples | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 4.3 |
Level 3 | First Lien Debt | Enterprise Value | Revenue Multiples |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value |  | $ 3,275
Level 3 | First Lien Debt | Enterprise Value | Revenue Multiples | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range |  | 4.3
Level 3 | First Lien Debt | Enterprise Value | Revenue Multiples | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range |  | 4.3
Level 3 | First Lien Debt | Enterprise Value | Revenue Multiples | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range |  | 4.3
Level 3 | Second Lien Debt | Discounted Cash Flow |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value | $ 52,200 | $ 18,000
Level 3 | Second Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value | $ 153,257 | $ 180,825
Level 3 | Second Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.12 | 0.117
Level 3 | Second Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.30 | 0.25
Level 3 | Second Lien Debt | Discounted Cash Flow | Weighted Average Cost of Capital | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.157 | 0.145
Level 3 | Second Lien Debt | Enterprise Value | Asset Coverage |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Fair Value | $ 1,508 | $ 2,123
Level 3 | Second Lien Debt | Enterprise Value | Asset Coverage | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.6 | 0.8
Level 3 | Second Lien Debt | Enterprise Value | Asset Coverage | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.6 | 0.8
Level 3 | Second Lien Debt | Enterprise Value | Asset Coverage | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range | 0.6 | 0.8
Level 3 | Second Lien Debt | Enterprise Value | EBITDA Multiples | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range |  | 5
Level 3 | Second Lien Debt | Enterprise Value | EBITDA Multiples | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range |  | 5
Level 3 | Second Lien Debt | Enterprise Value | EBITDA Multiples | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt Investments, Range |  | 5

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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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