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Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands | May 05, 2025 | Apr. 23, 2025 | Apr. 15, 2025 | Mar. 31, 2025 | Dec. 31, 2024
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Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Investments at cost |  |  |  |  | $ 1,148,852 | [1],[2],[3] | $ 1,075,157 | [4],[5],[6]
Investment, Type [Extensible Enumeration] |  |  |  |  | Pfanstiehl Inc [Member] |  | Pfanstiehl Inc [Member] |
Issued additional debentures |  |  |  |  | $ 182,000 |  | $ 175,000 |
First Lien Debt |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Investments at cost | [7] |  |  |  | $ 810,708 |  | $ 729,084 |
Subsequent Events | Elements Brands, LLC |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Investments at cost |  |  | $ 3,706 |  |  |  |  |
Investment, Type [Extensible Enumeration] |  |  | First Lien Debt |  |  |  |  |
Subsequent Events | SBA Debentures |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Issued additional debentures |  | $ 10,000 |  |  |  |  |  |
Fixed Interest Rate |  | 5.163% |  |  |  |  |  |
Subsequent Events | First Lien Debt | Laboratory Testing, LLC |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Investments at cost |  |  |  | $ 5,000 |  |  |  |
Investment, Type [Extensible Enumeration] |  |  |  | Laboratory Testing, LLC |  |  |  |
Subsequent Events | Preferred Equity | Laboratory Testing, LLC |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Investments at cost |  |  |  | $ 362 |  |  |  |
Investment, Type [Extensible Enumeration] |  |  |  | Laboratory Testing, LLC |  |  |  |
Subsequent Events | Common Equity | Laboratory Testing, LLC |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Investments at cost |  |  |  | $ 388 |  |  |  |
Investment, Type [Extensible Enumeration] |  |  |  | Laboratory Testing, LLC |  |  |  |
Subsequent Events | Revolving Loan [Member] | Laboratory Testing, LLC | Maximum |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Investment commitment amount |  |  |  | $ 4,000 |  |  |  |
Regular Dividends | Subsequent Events |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Dividends to stockholders |  | $ 0.43 |  |  |  |  |  |
Supplemental Dividends | Subsequent Events |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Dividends to stockholders |  | $ 0.11 |  |  |  |  |  |
Quaterly Dividends | Subsequent Events |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Dividend payable date |  | Jun. 25, 2025 |  |  |  |  |  |
Dividend record date |  | Jun. 13, 2025 |  |  |  |  |  |
[1] | All debt investments are income producing, unless otherwise indicated. Equity investments are non-income producing unless otherwise noted.
[2] | Equity ownership may be held in shares or units of companies related to the portfolio companies. The Company’s investments are generally classified as “restricted securities”, unless otherwise noted, as such term is defined under Regulation S-X Rule 6-03(f) or Securities Act Rule 144. As of March 31, 2025, the Company held restricted securities with an aggregate fair value of $1,154,408, or 170% of the Company's net assets.
[3] | See Note 3 to the consolidated financial statements for portfolio composition by geographic location.
[4] | (a) See Note 3 to the consolidated financial statements for portfolio composition by geographic location.
[5] | (b) Equity ownership may be held in shares or units of companies related to the portfolio companies. The Company’s investments are generally classified as “restricted securities”, unless otherwise noted, as such term is defined under Regulation S-X Rule 6-03(f) or Securities Act Rule 144. As of December 31, 2024, the Company held restricted securities with an aggregate fair value of $1,090,506, or 166% of the Company's net assets.
[6] | (c) All debt investments are income producing, unless otherwise indicated. Equity investments are non-income producing unless otherwise noted.
[7] |
(1) | Includes unitranche investments, which account for 44.6% and 44.7% of the Company's portfolio on a fair value and cost basis as of March 31, 2025, respectively. Includes unitranche investments, which account for 39.9% and 40.4% of the Company's portfolio on a fair value and cost basis as of December 31, 2024, respectively.

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