v3.25.2

Borrowings - Schedule of Consolidated Statements of Assets and Liabilities (Details) - Level 1 [Member] - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024
Schedule of Consolidated Statements of Assets and Liabilities [Line Items]
Total debt issuance costs at beginning of period	$ 1,511	$ 1,689
Debt issuance costs during the period		169
Amortized debt issuance costs	277	347
Unamortized debt issuance costs	1,234	1,511
2028 Notes [Member]
Schedule of Consolidated Statements of Assets and Liabilities [Line Items]
Total debt issuance costs at beginning of period	1,357	1,689
Debt issuance costs during the period
Amortized debt issuance costs	250	332
Unamortized debt issuance costs	1,107	1,357
2028 Promissory Note [Member]
Schedule of Consolidated Statements of Assets and Liabilities [Line Items]
Total debt issuance costs at beginning of period	154
Debt issuance costs during the period		169
Amortized debt issuance costs	27	15
Unamortized debt issuance costs	$ 127	$ 154

Amount of accumulated amortization of debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482900/835-30-50-1

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+ References

No definition available.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-1A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482900/835-30-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

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PhenixFIN Corp 10-Q