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Distributions - Components of Accumulated Earnings (Deficit) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Income Tax Disclosure [Abstract] |  |  |
Accumulated capital gains (capital loss carryforwards) | $ 0 | $ (25,837) | $ (56,486)
Other temporary differences | 8,538 | 9,722 | 10,695
Undistributed ordinary income | 0 | 0 | 0
Unrealized (appreciation) depreciation | (1,019) | 63,585 | (2,973)
Total | $ 7,519 | $ 47,470 | $ (48,764)

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