Significant Accounting Policies - Additional Information (Details)			12 Months Ended
	Nov. 30, 2018	Oct. 30, 2018	Dec. 31, 2024 USD ($) Contract Segment	Dec. 31, 2023 USD ($) Contract
Significant Accounting Policies [Line Items]
Cash and cash equivalents			$ 74,357,000	$ 93,575,000
Number of derivative contracts or collateral on option contracts held | Contract			0	0
Minimum ordinary income distribution percentage			98.00%
Minimum capital gains distribution percentage			98.20%
Investment company, pay excise tax equal to percentage of amount of annual income and capital gains exceed distribution from taxable income			4.00%
Uncertain tax positions			$ 0
Interest and penalties accrued			$ 0
Reverse stock split, conversion ratio		0.33
Reverse stock split, description	The Company’s Board approved a one-for-three reverse stock split of the Company’s common stock on October 30, 2018 which was effective as of close of business as of November 30, 2018 (the “Reverse Stock Split”).
Segment reporting, codm, profit (loss) measure, how used, description			Key metrics include, but are not limited to, net investment income and net increase in net assets resulting from operations that is reported on the Consolidated Statement of Operations, fair value of investments as disclosed on the Consolidated Schedule of Investments, as well as distributions made to the Company’s shareholders. The Company’s adoption of this guidance did not have a material impact on the Company’s financial position, results of operations or cash flows.
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]			srt:ChiefExecutiveOfficerMember
Number of operating segment | Segment			1
Number of reporting unit | Segment			1
ASU 2023-07
Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]			true
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]			true
Maximum
Significant Accounting Policies [Line Items]
Investments, fair value			$ 1,000,000
Minimum
Significant Accounting Policies [Line Items]
Investment company taxable income percentage			90.00%