v3.23.3

Commitments and Contingencies - Schedule of Unfunded Commitments by Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	$ 232,740	$ 224,239
Investment, Identifier [Axis]: 107 Fair Street LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	4,227	0
Investment, Identifier [Axis]: 107-109 Beech OAK22 LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	26,969	0
Investment, Identifier [Axis]: 109 Montgomery Owner LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	477
Investment, Identifier [Axis]: 112-126 Van Houten Real22 LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,343	0
Investment, Identifier [Axis]: ADC Therapeutics SA
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	3,020	3,020
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	396	0
Investment, Identifier [Axis]: Accupac, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	4,500	4,605
Investment, Identifier [Axis]: Acquia Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	1,376	1,326
Investment, Identifier [Axis]: Apptio, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	1,338
Investment, Identifier [Axis]: Ardonagh Midco 3 PLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	4,372
Investment, Identifier [Axis]: Assembled Brands Capital LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	7,514	2,008
Investment, Identifier [Axis]: Avalara, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	5,047	0
Investment, Identifier [Axis]: BAART Programs, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	8,645
Investment, Identifier [Axis]: Berner Food & Beverage, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	1,622	1,392
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	14,547	11,785
Investment, Identifier [Axis]: CorEvitas, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	915
Investment, Identifier [Axis]: Coupa Holdings, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,075	0
Investment, Identifier [Axis]: Coyote Buyer, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	400	1,333
Investment, Identifier [Axis]: Delta Leasing SPV II LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	14,639	27,187
Investment, Identifier [Axis]: Dialyze Holdings, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	3,431
Investment, Identifier [Axis]: Digital.AI Software Holdings, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	1,078	826
Investment, Identifier [Axis]: Dominion Diagnostics, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	3,484	11,148
Investment, Identifier [Axis]: Establishment Labs Holdings Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	3,384	5,075
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	1,626	0
Investment, Identifier [Axis]: Fairbridge Strategic Capital Funding LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	13,090	22,150
Investment, Identifier [Axis]: Finastra USA, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	960	0
Investment, Identifier [Axis]: GKD Index Partners, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	320
Investment, Identifier [Axis]: Galileo Parent, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,061	0
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	5,286	4,293
Investment, Identifier [Axis]: Harrow, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	4,011	0
Investment, Identifier [Axis]: Impel Pharmaceuticals Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,458	0
Investment, Identifier [Axis]: Innocoll Pharmaceuticals Limited
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	4,195
Investment, Identifier [Axis]: Inventus Power, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	3,792	0
Investment, Identifier [Axis]: Kings Buyer, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	5,189	1,537
Investment, Identifier [Axis]: LSL Holdco, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,650	427
Investment, Identifier [Axis]: Liquid Environmental Solutions Corporation
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	1,383	1,115
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	821	1,429
Investment, Identifier [Axis]: MND Holdings III Corp
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	9,122	0
Investment, Identifier [Axis]: MRI Software LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,261	5,196
Investment, Identifier [Axis]: Marinus Pharmaceuticals, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	5,734
Investment, Identifier [Axis]: Mesoblast, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	3,553
Investment, Identifier [Axis]: Mindbody, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	4,762	4,000
Investment, Identifier [Axis]: OCSI Glick JV LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	13,998	13,998
Investment, Identifier [Axis]: OTG Management, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	3,190	3,789
Investment, Identifier [Axis]: Oranje Holdco, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	1,904	0
Investment, Identifier [Axis]: PPW Aero Buyer, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	1,466	0
Investment, Identifier [Axis]: PRGX Global, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	3,127	2,518
Investment, Identifier [Axis]: Pluralsight, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	1,787	3,532
Investment, Identifier [Axis]: Relativity ODA LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,762	2,218
Investment, Identifier [Axis]: RumbleOn, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	4,822
Investment, Identifier [Axis]: SCP Eye Care Services, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,356	0
Investment, Identifier [Axis]: SIO2 Medical Products, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	1,821	0
Investment, Identifier [Axis]: Salus Workers' Compensation, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	3,102	0
Investment, Identifier [Axis]: Senior Loan Fund JV I, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	13,125	35,000
Investment, Identifier [Axis]: Seres Therapeutics, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	8,090	0
Investment, Identifier [Axis]: Spanx, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,473	2,226
Investment, Identifier [Axis]: Supreme Fitness Group NY Holdings, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,199	1,527
Investment, Identifier [Axis]: Tahoe Bidco B.V.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	2,162	1,741
Investment, Identifier [Axis]: Telestream Holdings Corporation
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	407	528
Investment, Identifier [Axis]: Thrasio, LLC
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	0	2,578
Investment, Identifier [Axis]: iCIMs, Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	7,466	6,930
Investment, Identifier [Axis]: scPharmaceuticals Inc.
Financial Support for Nonconsolidated Legal Entity [Line Items]
Unfunded commitments	$ 5,212	$ 0

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-15

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-16

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Amount of financial support committed by investment company to investee that is contractually required but not provided.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 20
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-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-16

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