U.S. Federal Income Tax Information - Summary of Permanent Book Tax Differences and Reclasses (Detail) - USD ($)		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Investment Income Permanent Book Tax Differences [Abstract]
Paid in capital excess of par value		$ (533,512)	$ 2,104,942	$ (1,621,021)
Distributions in excess of net investment income	[1]	(308,998)	1,143,870	1,541,871
Accumulated realized gains	[1]	$ 842,510	$ (3,248,812)	$ 79,150

[1] Amounts are included in distributable earnings (accumulated loss) on the Statements of Assets and Liabilities.