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Distributions - Components of Accumulated Earnings (Deficit) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
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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Investment Company, Distributable Earnings (Loss), Accumulated Long-Term Capital Gain (Accumulated Capital Loss Carryforward)

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Amount of accumulated undistributed earnings (deficit) from unrealized appreciation (depreciation) of investment company.

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