Income Taxes - Summary of Tax cost of Investments, Net and Gross Changes in Unrealized Appreciation (Depreciation) on Investments Owned (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes Disclosure [Line Items]
Net unrealized gain (loss) on a tax basis	$ (38,472)	$ (23,593)	$ 2,548
U.S. Federal Income Tax
Income Taxes Disclosure [Line Items]
Tax Cost of Investments	1,105,481	1,149,902	726,969
Unrealized gain on a tax basis	11,239	9,207	23,598
Unrealized loss on a tax basis	(49,711)	(32,800)	(21,050)
Net unrealized gain (loss) on a tax basis	$ (38,472)	$ (23,593)	$ 2,548