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Fair Value of Financial Instruments - Schedule of Equity Investments (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] |  |  |
Total net change in unrealized appreciation (depreciation) | $ 25,010 | $ (85,063) | $ 3,311
Significant Unobservable Inputs (Level 3) | Debt Investments |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] |  |  |
Total net change in unrealized appreciation (depreciation) | 11,500 | (18,900) |
Significant Unobservable Inputs (Level 3) | Preferred Stock Investment |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] |  |  |
Total net change in unrealized appreciation (depreciation) | (4,600) | (19,400) |
Significant Unobservable Inputs (Level 3) | Common Stock Investment |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] |  |  |
Total net change in unrealized appreciation (depreciation) | 11,300 | 6,800 |
Significant Unobservable Inputs (Level 3) | Warrants |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] |  |  |
Total net change in unrealized appreciation (depreciation) | $ 1,500 | $ (12,700) |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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