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Debt - Summary of SBIC Investments (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) firm | Dec. 31, 2023 USD ($) firm
Debt Instrument [Line Items] |  |
Fair value of investments (in millions) | $ 3,659,978 | $ 3,248,046
HC IV |  |
Debt Instrument [Line Items] |  |
Number of investments held | firm | 33 | 25
Fair value of investments (in millions) | $ 377,700 | $ 331,500
Percentage of fair value of investments based on the Company's total investment portfolio | 10.30% | 10.20%
Tangible assets (in millions) | $ 382,900 | $ 341,800
Percentage of tangible assets based on the Company's total assets | 10.00% | 10.00%
SBIC V |  |
Debt Instrument [Line Items] |  |
Number of investments held | firm | 11 | 0
Fair value of investments (in millions) | $ 155,600 | $ 0
Percentage of fair value of investments based on the Company's total investment portfolio | 4.30% | 0.00%
Tangible assets (in millions) | $ 157,800 | $ 0
Percentage of tangible assets based on the Company's total assets | 4.10% | 0.00%

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