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Fair Value of Financial Instruments - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Unrealized Gain (Loss) on Investments | $ 21,105 | $ (36,742) |
2033 Notes |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Current Price Per Par Value | $ 23.96 |  | $ 24.59
2031 Asset-Backed Notes |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Current Price Per Par Value | $ 0.940 |  | $ 0.951
Debt | Unobservable Inputs Level 3 | Depreciation [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Unrealized Gain (Loss) on Investments | $ (22,600) |  |
Debt | Unobservable Inputs Level 3 | Appreciation |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Unrealized Gain (Loss) on Investments |  | 8,000 |
Warrant Investment [Member] | Unobservable Inputs Level 3 | Depreciation [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Unrealized Gain (Loss) on Investments | (600) |  |
Warrant Investment [Member] | Unobservable Inputs Level 3 | Appreciation |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Unrealized Gain (Loss) on Investments |  | 300 |
Common Stock Investment [Member] | Unobservable Inputs Level 3 | Appreciation |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Unrealized Gain (Loss) on Investments | 5,600 | 2,200 |
Preferred Stock Investment Member | Unobservable Inputs Level 3 | Depreciation [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Unrealized Gain (Loss) on Investments | $ (1,100) | $ (7,300) |
Underwriting | 2033 Notes |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Current Price Per Par Value | $ 25.00 |  |

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- Definition Amount of unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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