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Consolidated Schedule of Investments (Parenthetical) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2022

Dec. 31, 2021

Schedule of Investments [Line Items]

Percentage of debt securities contains floor rates

78.80%

74.80%

Aggregate cost of investments

$ 652,217

$ 605,365

Aggregate gross unrealized appreciation

34,800

29,300

Aggregate gross unrealized depreciation

38,300

41,300

Net unrealized depreciation

$ 3,400

$ 12,000

Percentage of qualifying assets to total assets

82.40%

84.20%

Maximum

Schedule of Investments [Line Items]

Floor rate

2.00%

2.00%

Minimum

Schedule of Investments [Line Items]

Floor rate

0.50%

0.50%

Investments

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

247.00%

194.00%

Aggregate cost of investments

$ 652,217

Garrison Capital Equity Holdings II LLC

Schedule of Investments [Line Items]

Non controlling member interest rate

17.50%

17.50%

ATP Oil & Gas Corporation

Schedule of Investments [Line Items]

Royalty interest

5.00%

5.00%

Senior Secured Loan

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

180.00%

(130.00%)

Aggregate cost of investments

$ 435,856

$ 361,556

Junior Secured Loan

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

24.00%

25.00%

Aggregate cost of investments

$ 65,776

$ 82,996

Senior Unsecured Bond

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

0.00%

0.00%

Effective interest

10.00%

Aggregate cost of investments

$ 416

$ 416

Senior Unsecured Bond | Tank Partners Equipment Holdings, LLC

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

10.00%

Equity Securities

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

(9.00%)

8.00%

Aggregate cost of investments

$ 28,848

$ 26,680

Investments For Federal Income Tax Purpose

Schedule of Investments [Line Items]

Aggregate cost of investments

$ 656,000

$ 628,600

CLO Subordinated Investments

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

9.00%

11.00%

Asset Manager Affiliates

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

0.00%

0.00%

Aggregate cost of investments

^[1]

$ 17,791

$ 17,791

Joint Ventures

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

25.00%

22.00%

Aggregate cost of investments

$ 68,850

$ 64,365

^[2]

Derivatives

Schedule of Investments [Line Items]

Percentage of net asset value at fair value

0.00%

(1.00%)

Aggregate cost of investments

$ 31

$ 31

^[2]

Controlled Affiliated Investments

Schedule of Investments [Line Items]

Aggregate cost of investments

$ 58,322

$ 52,130

Controlled Affiliated Investments | Minimum

Schedule of Investments [Line Items]

Percentage of outstanding voting securities owned

25.00%

25.00%

Non-controlled Affiliated Investments

Schedule of Investments [Line Items]

Aggregate cost of investments

$ 75,196

$ 74,082

Non-controlled Affiliated Investments | Minimum

Schedule of Investments [Line Items]

Percentage of outstanding voting securities owned

5.00%

5.00%

Subordinated Securities | CLO Subordinated Investments | Catamaran CLO 2014-1 Ltd.

Schedule of Investments [Line Items]

Aggregate cost of investments

^[3],[4]

$ 4,216

Subordinated Securities | CLO Subordinated Investments | Catamaran CLO 2014-2 Ltd.

Schedule of Investments [Line Items]

Effective interest

^[3],[4]

0.00%

Subordinated Securities | CLO Subordinated Investments | Catamaran CLO 2015-1 Ltd.

Schedule of Investments [Line Items]

Effective interest

^[3],[4]

0.00%

Subordinated Securities | CLO Subordinated Investments | Catamaran CLO 2018-1 Ltd.

Schedule of Investments [Line Items]

Effective interest

^[3],[4]

9.90%

Subordinated Securities | CLO Subordinated Investments | Dryden 30 Senior Loan Fund

Schedule of Investments [Line Items]

Effective interest

^[3],[4]

0.00%

Subordinated Securities | CLO Subordinated Investments | JMP Credit Advisors CLO IV Ltd.

Schedule of Investments [Line Items]

Effective interest

^[3],[4]

6.30%

Subordinated Securities | CLO Subordinated Investments | JMP Credit Advisors CLO V Ltd.

Schedule of Investments [Line Items]

Effective interest

^[3],[4]

7.10%

[1]	Represents the equity investment in the Asset Manager Affiliates.
[2]	The Company's investments are generally acquired in private transactions exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”) and, therefore, are generally subject to limitations on resale, and may be deemed to be “restricted securities'' under the Securities Act of 1933.
[3]	Fair value of this investment was determined using significant unobservable inputs.
[4]	Non-U.S. company or principal place of business outside the U.S.

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