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Investments (Details) - Schedule of Portfolio Composition by Geographic Location at Fair Value - USD ($) | Jun. 30, 2023 | Sep. 30, 2022
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Investments (Details) - Schedule of Portfolio Composition by Geographic Location at Fair Value [Line Items] |  |
Fair Value | $ 218,686,618 | $ 192,956,649
Percentage | 100.00% | 100.00%
Northeast [Member] |  |
Investments (Details) - Schedule of Portfolio Composition by Geographic Location at Fair Value [Line Items] |  |
Fair Value | $ 87,435,000 | $ 92,939,000
Percentage | 39.90% | 48.20%
Southeast [Member] |  |
Investments (Details) - Schedule of Portfolio Composition by Geographic Location at Fair Value [Line Items] |  |
Fair Value | $ 55,729,000 | $ 51,797,000
Percentage | 25.50% | 26.80%
Midwest [Member] |  |
Investments (Details) - Schedule of Portfolio Composition by Geographic Location at Fair Value [Line Items] |  |
Fair Value | $ 34,240,000 | $ 16,023,000
Percentage | 15.70% | 8.30%
West [Member] |  |
Investments (Details) - Schedule of Portfolio Composition by Geographic Location at Fair Value [Line Items] |  |
Fair Value | $ 26,830,000 | $ 20,196,000
Percentage | 12.30% | 10.50%
Southwest [Member] |  |
Investments (Details) - Schedule of Portfolio Composition by Geographic Location at Fair Value [Line Items] |  |
Fair Value | $ 6,498,000 | $ 6,288,000
Percentage | 3.00% | 3.30%
Mid-Atlantic [Member] |  |
Investments (Details) - Schedule of Portfolio Composition by Geographic Location at Fair Value [Line Items] |  |
Fair Value | $ 204,000 | $ 265,000
Percentage | 0.10% | 0.10%
International [Member] |  |
Investments (Details) - Schedule of Portfolio Composition by Geographic Location at Fair Value [Line Items] |  |
Fair Value | $ 7,751,000 | $ 5,449,000
Percentage | 3.50% | 2.80%

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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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