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Distributable Taxable Income - Reconciliation of Net Increase in Net Assets Resulting From Operations to Taxable Income (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |
Net increase (decrease) in net assets resulting from operations | $ (4,205) |  |  | $ 9,145 |  |  | $ (8,580) | [1] | $ 28,026 | [1]
Tax (provision) benefit on realized and unrealized gains (losses) on investments | 542 | $ (77) | $ (440) |  |  |  | 1,059 | [1] |  |
Net change in unrealized (appreciation) depreciation from investments | $ 2,968 | $ (113) | $ (2,143) | $ 642 | $ (1,490) | $ (6,745) | 712 | [1] | (7,593) | [1]
Net realized losses |  |  |  |  |  |  | 28,631 |  | 13,208 |
Book/tax differences on CLO equity investments |  |  |  |  |  |  | 1,323 |  | 3,030 |
Book/tax differences related to mergers and partnership investments |  |  |  |  |  |  | (1,208) |  | (17,490) |
Other book/tax differences |  |  |  |  |  |  | 385 |  | 1,301 |
Taxable income before deductions for distributions |  |  |  |  |  |  | $ 22,092 |  | $ 20,482 |
Taxable income before deductions for distributions per weighted average basic and diluted shares for the period |  |  |  |  |  |  | $ 2.29 |  | $ 2.49 |
[1] | Refer to Note 9 "Stockholders' Equity" for additional information on changes in components of Stockholders' Equity

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