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Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2025
Accounting Policies [Abstract] |
Concentrations of Portfolio Company Values Compared to the Fair Value of the Corporation's Total Investment Portfolio | The following are the concentrations of the top five portfolio company values compared to the fair value of the Corporation’s total investment portfolio:
|  | June 30, 2025 |
Seybert’s Billiards Corporation (Seybert’s) |  |  | 16 | %
BMP Food Service Supply Holdco, LLC (FSS) |  |  | 13 | %
Inter-National Alloys LLC (EFINEA) |  |  | 9 | %
Caitec, Inc. (Caitec) |  |  | 9 | %
FCM Industries Holdco LLC (First Coast Mulch) |  |  | 7 | %
|  | December 31, 2024 |
Tilson Technology Management, Inc. (Tilson) |  |  | 16 | %
Seybert’s |  |  | 11 | %
FSS |  |  | 10 | %
Mattison Avenue Holdings LLC (Mattison) |  |  | 8 | %
Caitec |  |  | 6 | %

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