Commitments and Contingencies (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Loss Contingencies [Line Items]
Investment company, financial commitment to investee, future amount	$ 170,567	$ 224,581
Undrawn Revolver
Loss Contingencies [Line Items]
Investment company, financial commitment to investee, future amount	$ 33,129	$ 35,643

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
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-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-4

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
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-URI https://asc.fasb.org//1943274/2147483076/450-20-50-9

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