Distributions - Declared on GAAP Basis (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Amount	$ 5,259	$ 3,618	$ 10,187	$ 6,908
% of Distributions Declared			100.00%	100.00%
Amount of expense support received	$ 0	$ 1,845	$ 0	$ 4,495
Net Investment Income
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Amount			$ 7,431	$ 4,833
% of Distributions Declared			72.90%	70.00%
Amount of expense support received			$ (2,352)	$ 4,495
Distributions in excess of net investment income
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Amount			$ 2,756	$ 2,075
% of Distributions Declared			27.10%	30.00%

Distributions declared allocation percentage.

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- 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

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- Definition

Amount of dividend distribution from ordinary income and capital gain. Excludes distribution for tax return of capital.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 20
-Section 50
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=66023616&loc=d3e9079-115832

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 205
-Section 45
-Paragraph 3
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=118262037&loc=d3e9915-115836

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- Definition

Amount of expense reduction under arrangement in which third party explicitly reduces its fee by specified amount for service provided in exchange for use of investment company's assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 20
-Section 45
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-URI https://asc.fasb.org/extlink&oid=6488101&loc=d3e8732-115831

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