Selected Quarterly Financial Data (Unaudited) - Schedule of selected quarterly financial data (Details) |
3 Months Ended | 12 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2025
USD ($)
Item
$ / shares
shares
|
Dec. 31, 2024
USD ($)
Item
$ / shares
shares
|
Dec. 31, 2023
USD ($)
Item
$ / shares
shares
|
Dec. 31, 2025
USD ($)
Item
$ / shares
shares
|
Dec. 31, 2024
USD ($)
Item
$ / shares
shares
|
Dec. 31, 2023
USD ($)
$ / shares
shares
|
Dec. 31, 2022
USD ($)
$ / shares
shares
|
Dec. 31, 2021
USD ($)
$ / shares
shares
|
Dec. 31, 2020
$ / shares
|
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| Income | ||||||||||||||||
| Total investment income | $ 9,880,152 | $ 10,640,418 | $ 11,187,494 | $ 39,595,319 | $ 42,701,534 | $ 42,963,870 | ||||||||||
| Expenses | ||||||||||||||||
| Net expense | 1,372,780 | 1,603,165 | 1,627,811 | 5,920,202 | 6,518,569 | 6,737,990 | ||||||||||
| Net Investment Income | 8,507,372 | 9,037,252 | 9,559,683 | 33,675,117 | 36,182,965 | 36,225,880 | ||||||||||
| Net realized gain (loss) on investments | (62,212) | (513,337) | (5,348,771) | 1,966,503 | 907,842 | 5,528,490 | ||||||||||
| Net change in unrealized depreciation (appreciation) on investments | (2,383,379) | (144,418) | 4,461,831 | 5,941,064 | 3,665,650 | (3,595,408) | ||||||||||
| Net increase in net assets resulting from operations | $ 6,061,781 | $ 8,379,497 | $ 8,672,743 | $ 25,767,550 | $ 31,609,473 | $ 34,292,798 | ||||||||||
| Per Share Data | ||||||||||||||||
| Net investment income per common share - diluted | $ / shares | $ 0.21 | [1] | $ 0.23 | [1] | $ 0.25 | [1] | $ 0.72 | $ 0.78 | $ 0.81 | |||||||
| Net investment income per common share - basic | $ / shares | 0.21 | [1] | 0.23 | [1] | 0.25 | [1] | 0.72 | 0.78 | 0.81 | |||||||
| Net increase in net assets resulting from operations per common share - diluted | $ / shares | 0.13 | [1] | 0.18 | [1] | 0.19 | [1] | 0.55 | 0.68 | 0.77 | |||||||
| Net increase in net assets resulting from operations per common share - basic | $ / shares | 0.13 | [1] | 0.18 | [1] | 0.19 | [1] | $ 0.55 | $ 0.68 | $ 0.77 | |||||||
| Distributions declared per common share | $ / shares | $ 0.18 | $ 0.21 | $ 0.42 | |||||||||||||
| Statement of Assets and Liabilities Data | ||||||||||||||||
| Total assets | $ 422,871,621 | $ 433,157,788 | $ 413,464,757 | $ 422,871,621 | $ 433,157,788 | $ 413,464,757 | ||||||||||
| Total liabilities | 4,316,273 | 6,515,383 | 4,380,479 | 4,316,273 | 6,515,383 | 4,380,479 | ||||||||||
| Net assets at end of period | $ 418,555,348 | $ 426,642,405 | $ 409,084,278 | $ 418,555,348 | $ 426,642,405 | $ 409,084,278 | $ 428,477,678 | $ 373,947,334 | ||||||||
| Net asset value per common share | $ / shares | $ 8.9 | $ 9.07 | $ 9.19 | $ 8.9 | $ 9.07 | $ 9.19 | $ 9.24 | $ 9.36 | $ 9.31 | |||||||
| Shares of common stock outstanding at end of period | shares | 47,020,468 | 47,020,454 | 44,518,989 | 47,020,468 | 47,020,454 | 44,518,989 | 46,376,461 | 39,961,408 | ||||||||
| Weighted common shares outstanding - diluted | shares | 47,020,465 | 46,205,335 | 44,518,983 | 47,020,459 | 46,205,335 | 44,518,983 | ||||||||||
| Weighted common shares outstanding - basic | shares | 47,020,459 | 46,205,335 | 44,518,983 | |||||||||||||
| Other Data | ||||||||||||||||
| Number of portfolio investments | Item | 330 | 289 | 246 | 330 | 289 | |||||||||||
| Average investment amount | [2] | $ 1,273,903 | $ 1,442,816 | $ 1,587,282 | $ 1,273,903 | $ 1,442,816 | $ 1,587,282 | |||||||||
| Percentage of investments at floating rates | [2] | 100.00% | 100.00% | 99.59% | ||||||||||||
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| X | ||||||||||
- Definition The amount of average investments at cost. No definition available.
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| X | ||||||||||
- Definition Per share value of net investment income per share, basic. No definition available.
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| X | ||||||||||
- Definition Per share value of net investment income per share, diluted. No definition available.
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| X | ||||||||||
- Definition Represents the number of investments with aggregate fair value. No definition available.
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| X | ||||||||||
- Definition Percentage of Investments at Floating Rates No definition available.
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| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of realized gain (loss) on investment in debt and equity securities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment in debt and equity securities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount, after reimbursement and fee waiver, of expense for generation of investment income classified as operating. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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