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Investments - Schedule of Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Cost/Amortized Cost	$ 630,191	$ 605,365
Fair Value	571,656	549,985
KCAP Freedom 3 LLC
Schedule of Investments [Line Items]
Cost/Amortized Cost	42,990	40,847
Fair Value	$ 28,703	$ 35,841
Great Lakes KCAP F3C Senior, LLC | Subordinated Securities, Effective Interest 17.1%, 12/29 Maturity | KCAP Freedom 3 LLC
Schedule of Investments [Line Items]
Percentage Ownership by Joint Venture	100.00%
Cost/Amortized Cost	$ 42,990
Fair Value	$ 28,703
Great Lakes KCAP F3C Senior, LLC | Subordinated Securities, Effective Interest 21.3%, 12/29 Maturity | KCAP Freedom 3 LLC
Schedule of Investments [Line Items]
Percentage Ownership by Joint Venture		100.00%
Cost/Amortized Cost		$ 40,847
Fair Value		$ 35,841

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- Definition

Cost of the investment.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
-Paragraph 6
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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