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Commitments and Contingencies - Summary of Outstanding Commitments to Fund Investments in Current Portfolio Companies (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	$ 34,959	$ 47,899
Accordion Partners LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		2,800
Accordion Partners LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	698
Accordion Partners LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	872
Accordion Partners LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		5,000
Accordion Partners LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	1,531
AMCP Pet Holdings, Inc. | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		1,000
AMCP Pet Holdings, Inc. | Revolving Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		325
Analogic Corporation | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	23	87
Anthem Sports & Entertainment Inc. | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	83	583
Appfire Technologies, LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		4,459
BCP Great Lakes Holdings LP | Joint Venture
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		13,050
Beta Plus Technologies, Inc | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	2,415
Bradshaw International Parent Corp. | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		722
Bradshaw International Parent Corp. | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	922
Bristol Hospice | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	55	195
Centric Brands Inc. | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		755
Centric Brands Inc. | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	428
Centric Brands Inc. | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	58
Critical Nurse Staffing, LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		3,094
Critical Nurse Staffing, LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	3,094
Critical Nurse Staffing, LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		2,000
Critical Nurse Staffing, LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	1,400
Dentive, LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	234
Dentive, LLC | Delayed Draw Term Loan - First Lien
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	748
Datalink, LLC | Delayed Draw Term Loan - First Lien
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		525
Global Integrated Flooring Systems Inc. | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		43
GreenPark Infrastructure, LLC | Preferred Equity
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	1,829
Grupo HIMA San Pablo, Inc. | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		104
H.W. Lochner, Inc. | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	1,799	2,199
Keg Logistics LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	436	872
Luminii LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	172	172
Marble Point Credit Management LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	2,500	2,500
Maxor National Pharmacy Services, LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	585	585
Naviga Inc. | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	77	302
Netwrix Corporation | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	1,148
Netwrix Corporation | Delayed Draw Term Loan - First Lien
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	1,017
Premier Imaging, LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		1,937
Premier Imaging, LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	1,378
Ritedose Holdings I, INC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		537
Series A-Great Lakes Funding II LLC | Joint Venture
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	8,038
TA/WEG Holdings, LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		3,743
TA/WEG Holdings, LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	2,634
TA/WEG Holdings, LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		308
TA/WEG Holdings, LLC | Revolver
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	784
TLE Holdings, LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value		$ 2
TLE Holdings, LLC | Delayed Draw Term Loan
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Portfolio Company Commitments, Par Value	$ 2

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Amount of financial support to be provided in future by investment company to investee.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=66023616&loc=SL35737436-115832

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