Income Taxes - Summary of Components of Accumulated Losses on Tax Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Undistributed net investment income	$ 34,975	$ 15,656	$ 13,350
Other temporary differences	(428)	(437)	(447)
Post October loss deferrals	0	0	0
Capital loss carryover	(196,476)	(41,134)	(34,248)
Unrealized appreciation (depreciation)	(61,409)	(36,583)	7,437
Components of tax distributable earnings at year end	$ (223,338)	$ (62,498)	$ (13,908)