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Investments - Additional Information (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 USD ($) Member | Mar. 31, 2022 USD ($) | Dec. 31, 2022 USD ($)
Investment Holdings [Line Items] |  |  |
CLO fund securities percentage of total assets | 3.20% |  | 3.30%
Non qualified assets percentage of total assets | 16.90% |  | 17.60%
Joint ventures percentage of total assets | 10.40% |  | 9.50%
Fair Value | $ 539,122 |  | $ 576,478
Unfunded commitment to investee | 22,102 |  | 34,959
Level II |  |  |
Investment Holdings [Line Items] |  |  |
Fair Value | $ 53,400 |  | 65,000
Non Qualifying Assets |  |  |
Investment Holdings [Line Items] |  |  |
Investment portfolio percentage | 30.00% |  |
Joint venture |  |  |
Investment Holdings [Line Items] |  |  |
Investment income from investments in joint ventures | $ 2,500 | $ 2,100 |
Aggregate fair value of investments in joint venture | $ 61,700 |  | 59,000
F3C Joint Venture |  |  |
Investment Holdings [Line Items] |  |  |
F3C Joint venture ownership percentage | 62.80% |  |
Number of board of directors | Member | 4 |  |
Directors selected by company | Member | 2 |  |
Directors selected by Freedom 3 Opportunities | Member | 2 |  |
Series A-Great Lakes Funding II LLC |  |  |
Investment Holdings [Line Items] |  |  |
Percentage of voting interest | 50.00% |  |
Fair Value | $ 45,600 |  | 40,300
Increase in aggregate commitment to investee | 50,000 |  |
Unfunded commitment to investee | $ 2,500 |  | $ 8,000

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