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Investments - Company Portfolio by Security and Investment (Details) - USD ($)
$ in Thousands

Dec. 31, 2022

Jun. 30, 2023

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 652,217

$ 595,975

Cost/Amortized Cost

652,217

595,975

Fair Value

576,478

510,100

Fair Value

$ 576,478

$ 510,100

Investment Owned Percent

^[1],[2]

100.00%

100.00%

Aerospace and Defense

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 10,579

$ 9,436

Fair Value

$ 10,494

$ 9,556

Investment Owned Percent

^[1]

2.00%

2.00%

Asset Management Company

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 17,791

^[3]

$ 17,791

^[4]

Automotive

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

7,329

6,906

Fair Value

$ 6,947

$ 4,986

Investment Owned Percent

^[1]

1.00%

1.00%

Banking, Finance, Insurance & Real Estate

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 76,038

$ 59,945

Fair Value

$ 78,264

$ 60,902

Investment Owned Percent

^[1]

14.00%

12.00%

Beverage, Food and Tobacco

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 12,619

$ 12,334

Fair Value

$ 12,456

$ 12,116

Investment Owned Percent

^[1]

2.00%

2.00%

Capital Equipment

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 10,681

$ 10,682

Fair Value

$ 2,745

$ 1,451

Investment Owned Percent

^[1]

1.00%

0.00%

Chemicals, Plastics and Rubber

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 10,447

$ 10,345

Fair Value

$ 10,359

$ 10,293

Investment Owned Percent

^[1]

2.00%

2.00%

CLO Fund Securities

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 34,649

$ 25,577

Fair Value

$ 20,453

$ 12,996

Investment Owned Percent

^[1]

3.00%

3.00%

Construction & Building

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 9,545

$ 7,773

Fair Value

$ 9,199

$ 7,507

Investment Owned Percent

^[1]

2.00%

1.00%

Consumer goods: Durable

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 16,762

$ 16,654

Fair Value

$ 13,943

$ 13,253

Investment Owned Percent

^[1]

2.00%

3.00%

Containers, Packaging and Glass

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 2,754

$ 2,741

Fair Value

$ 2,655

$ 2,743

Investment Owned Percent

^[1]

1.00%

1.00%

Electronics

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 10,866

$ 10,774

Fair Value

$ 11,129

$ 11,017

Investment Owned Percent

^[1]

2.00%

2.00%

Energy: Electricity

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 671

$ 671

Fair Value

$ 671

$ 671

Investment Owned Percent

^[1]

0.00%

0.00%

Energy: Oil & Gas

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 6,718

$ 6,719

Fair Value

$ 1,056

$ 580

Investment Owned Percent

^[1]

0.00%

0.00%

Environmental Industries

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 4,315

Fair Value

$ 4,930

Investment Owned Percent

^[1]

1.00%

Finance

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 17,570

$ 19,014

Fair Value

$ 17,581

$ 19,048

Investment Owned Percent

^[1]

3.00%

4.00%

Forest Products & Paper

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 1,589

Fair Value

$ 1,373

Investment Owned Percent

^[1]

0.00%

Healthcare, Education and Childcare

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 9,726

$ 6,205

Fair Value

$ 9,586

$ 6,191

Investment Owned Percent

^[1]

2.00%

1.00%

Healthcare & Pharmaceuticals

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 51,901

$ 50,244

Fair Value

$ 50,566

$ 48,805

Investment Owned Percent

^[1]

9.00%

10.00%

High Tech Industries

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 83,661

$ 84,922

Fair Value

$ 73,994

$ 76,160

Investment Owned Percent

^[1]

13.00%

14.00%

Hotel, Gaming & Leisure

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 10,245

$ 10,487

Fair Value

$ 6,798

$ 2,859

Investment Owned Percent

^[1]

1.00%

1.00%

Joint Venture

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 68,850

$ 74,878

Fair Value

$ 58,955

$ 62,547

Investment Owned Percent

10.00%

^[1]

12.00%

Machinery (Non-Agrclt/Constr/Electr)

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 9,461

$ 10,030

Fair Value

$ 9,291

$ 9,455

Investment Owned Percent

^[1]

2.00%

2.00%

Media: Advertising, Printing & Publishing

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 150

Fair Value

$ 549

Investment Owned Percent

^[1]

0.00%

Media: Broadcasting & Subscription

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 14,930

$ 15,478

Fair Value

$ 14,358

$ 14,163

Investment Owned Percent

^[1]

2.00%

3.00%

Media: Diversified & Production

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 6,976

$ 1,641

Fair Value

$ 6,572

$ 1,650

Investment Owned Percent

^[1]

1.00%

0.00%

Metals & Mining

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 15,846

$ 9,000

Fair Value

$ 14,786

$ 8,948

Investment Owned Percent

^[1]

3.00%

2.00%

Retail

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 10,772

$ 9,024

Fair Value

$ 10,871

$ 9,009

Investment Owned Percent

^[1]

2.00%

2.00%

Services: Business

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 66,807

$ 67,135

Fair Value

$ 66,207

$ 65,957

Investment Owned Percent

^[1]

11.00%

13.00%

Services: Consumer

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 8,569

$ 9,029

Fair Value

$ 8,128

$ 8,357

Investment Owned Percent

^[1]

1.00%

2.00%

Telecommunications

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 11,475

$ 11,463

Fair Value

$ 10,077

$ 10,366

Investment Owned Percent

^[1]

2.00%

2.00%

Textiles and Leather

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 12,689

Fair Value

$ 12,808

Investment Owned Percent

^[1]

2.00%

Transportation: Cargo

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 11,583

$ 11,585

Fair Value

$ 11,342

$ 11,114

Investment Owned Percent

^[1]

2.00%

2.00%

Transportation: Consumer

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 7,653

$ 7,492

Fair Value

$ 7,335

$ 7,400

Investment Owned Percent

^[1]

1.00%

1.00%

Senior Secured Loan

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 435,856

$ 396,674

Fair Value

$ 418,722

$ 376,539

Investment Owned Percent

^[2]

73.00%

74.00%

Junior Secured Loan

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 65,776

$ 51,707

Fair Value

$ 56,400

$ 37,962

Investment Owned Percent

^[2]

10.00%

7.00%

Senior Unsecured Bond

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 416

$ 416

Fair Value

$ 43

$ 43

Investment Owned Percent

^[2]

0.00%

0.00%

Equity Securities

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 28,848

$ 28,901

Fair Value

$ 21,905

$ 20,013

Investment Owned Percent

^[2]

4.00%

4.00%

CLO Fund Securities

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 34,649

$ 25,577

Fair Value

$ 20,453

$ 12,996

Investment Owned Percent

^[2]

3.00%

3.00%

Asset Manager Affiliates

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

^[4]

$ 17,791

$ 17,791

Joint Ventures

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

68,850

74,878

Fair Value

$ 58,955

$ 62,547

Investment Owned Percent

^[2]

10.00%

12.00%

Derivatives

Summary of Investment Holdings [Line Items]

Cost/Amortized Cost

$ 31

Cost/Amortized Cost

$ 31

[1]	Calculated as a percentage of total portfolio at fair value.
[2]	Represents percentage of total portfolio at fair value.
[3]	Represents the equity investment in the Asset Manager Affiliates
[4]	Represents the equity investment in the Asset Manager Affiliates.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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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-Name Accounting Standards Codification
-Topic 946
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
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-URI https://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010

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