CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) - USD ($)  $ in Thousands  | 
3 Months Ended | 
9 Months Ended | 
 | 
Jun. 30, 2023  | 
[5],[6],[7],[8],[18] | 
Dec. 31, 2023  | 
Mar. 31, 2023  | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
196.30%
 | 
[1],[2],[3],[4] | 
171.40%
 | 
[5],[6],[7],[8],[9] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 902,808
 | 
 | 
$ 753,543
 | 
[9] | 
| Percentage threshold of qualified assets representing total assets in order to acquire non-qualified assets | 
 | 
 
 | 
70.00%
 | 
 | 
70.00%
 | 
 | 
| Investment, interest rate, paid in cash | 
 | 
 
 | 
5.40%
 | 
 | 
4.90%
 | 
 | 
| Cumulative net unrealized appreciation | 
 | 
 
 | 
 
 | 
 | 
$ 150,400
 | 
 | 
| Cumulative gross unrealized depreciation | 
 | 
 
 | 
 
 | 
 | 
119,300
 | 
 | 
| Cumulative gross unrealized appreciation for federal income tax purposes | 
 | 
 
 | 
 
 | 
 | 
31,100
 | 
 | 
| Based on a tax cost | 
 | 
 
 | 
 
 | 
 | 
$ 722,400
 | 
 | 
| Funko Acquisition Holdings, LLC | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Percentage of acquired non-qualifying assets of total assets | 
 | 
 
 | 
0.10%
 | 
 | 
0.10%
 | 
 | 
| Collateral Pledged | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 702,900
 | 
 | 
$ 639,500
 | 
 | 
| Buildings and Real Estate | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
64,352
 | 
 | 
60,571
 | 
 | 
| Diversified/Conglomerate Services | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
255,141
 | 
 | 
268,954
 | 
 | 
| Healthcare, Education, and Childcare | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
50,237
 | 
 | 
37,445
 | 
 | 
| Home and Office Furnishings, Housewares, and Durable Consumer Products | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
155,897
 | 
 | 
143,685
 | 
 | 
| Hotels, Motels, Inns, and Gaming | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
80,557
 | 
 | 
58,713
 | 
 | 
| Leisure, Amusement, Motion Pictures, and Entertainment | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
38,356
 | 
 | 
47,616
 | 
 | 
| Oil and Gas | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
45,983
 | 
 | 
0
 | 
 | 
| Printing and Publishing | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
15,210
 | 
 | 
0
 | 
 | 
| Aerospace and Defense | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
25,754
 | 
 | 
22,215
 | 
 | 
| Cargo Transport | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
13,500
 | 
 | 
14,707
 | 
 | 
| Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
92,293
 | 
 | 
20,088
 | 
 | 
| Mining, Steel, Iron and Non-Precious Metals | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
27,831
 | 
 | 
25,998
 | 
 | 
| Telecommunications | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
8,881
 | 
 | 
18,987
 | 
 | 
| Chemicals, Plastics, and Rubber | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
19,256
 | 
 | 
24,891
 | 
 | 
| Secured First Lien Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
476,126
 | 
 | 
437,517
 | 
 | 
| Secured Second Lien Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
137,480
 | 
 | 
75,734
 | 
 | 
| Preferred Equity | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
214,664
 | 
 | 
222,585
 | 
 | 
| Common Equity/ Equivalents | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
74,538
 | 
 | 
17,707
 | 
 | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrants | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 0
 | 
[10],[11],[12] | 
$ 0
 | 
[13],[14],[15] | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
2.00%
 | 
[1],[2],[3],[4],[10],[16] | 
11.00%
 | 
[5],[6],[7],[8],[13],[15] | 
| Investment interest rate | 
 | 
 
 | 
7.40%
 | 
[1],[2],[3],[4],[10],[16] | 
15.90%
 | 
[5],[6],[7],[8],[13],[15] | 
| Line of credit facility, available | 
 | 
 
 | 
$ 0
 | 
[1],[2],[3],[4],[10],[16] | 
$ 0
 | 
[5],[6],[7],[8],[13],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 2,800
 | 
[10],[16] | 
2,800
 | 
[13],[15] | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[13],[14],[15] | 
 
 | 
 
 | 
 | 
$ 2,187
 | 
 | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[13],[15] | 
 
 | 
 
 | 
 | 
11.00%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[13],[15] | 
 
 | 
 
 | 
 | 
15.90%
 | 
 | 
| Investments owned, fair value | 
[13],[15] | 
 
 | 
 
 | 
 | 
$ 14,000
 | 
 | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt 1 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[10],[16] | 
 
 | 
2.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[10],[16] | 
 
 | 
7.40%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[10],[16] | 
 
 | 
$ 6,081
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc.– Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[10],[11],[12] | 
 
 | 
0
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 43,599
 | 
[11],[12] | 
$ 33,969
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 1 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
10.00%
 | 
[1],[2],[3],[4],[11] | 
10.00%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
15.40%
 | 
[1],[2],[3],[4],[11] | 
14.90%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 17,700
 | 
[11] | 
$ 17,700
 | 
[15] | 
| Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 2 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
10.00%
 | 
[1],[2],[3],[4],[11] | 
10.00%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
15.40%
 | 
[1],[2],[3],[4],[11] | 
14.90%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 6,850
 | 
[11] | 
$ 6,850
 | 
[15] | 
| Investment, Identifier [Axis]: Counsel Press, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[14],[15] | 
 
 | 
 
 | 
 | 
$ 27,885
 | 
 | 
| Investment, Identifier [Axis]: Counsel Press, Inc. – Term Debt 1 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
11.80%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
16.60%
 | 
 | 
| Investments owned, fair value | 
[15] | 
 
 | 
 
 | 
 | 
$ 21,100
 | 
 | 
| Investment, Identifier [Axis]: Counsel Press, Inc. – Term Debt 2 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
13.00%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
17.90%
 | 
 | 
| Investments owned, fair value | 
[15] | 
 
 | 
 
 | 
 | 
$ 6,400
 | 
 | 
| Investment, Identifier [Axis]: Dema/Mai Holdings, Inc - Preferred Equity | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11],[12] | 
 
 | 
$ 26,102
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Dema/Mai Holdings, Inc – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11] | 
 
 | 
11.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11] | 
 
 | 
16.40%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11] | 
 
 | 
$ 38,250
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Preferred Equity | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[14],[15] | 
 
 | 
 
 | 
 | 
$ 22,321
 | 
 | 
| Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
11.00%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
15.90%
 | 
 | 
| Investments owned, fair value | 
[15] | 
 
 | 
 
 | 
 | 
$ 38,250
 | 
 | 
| Investment, Identifier [Axis]: Diligent Delivery Systems – Common Stock Warrants | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 500
 | 
[12],[17] | 
$ 1,724
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Diligent Delivery Systems – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
9.00%
 | 
[1],[2],[3],[4],[17] | 
9.00%
 | 
[5],[6],[7],[8],[18] | 
| Investment interest rate | 
 | 
 
 | 
14.40%
 | 
[1],[2],[3],[4],[17] | 
13.90%
 | 
[5],[6],[7],[8],[18] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 13,000
 | 
[17] | 
$ 12,983
 | 
[18] | 
| Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc - Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[10],[11],[19] | 
 
 | 
5.50%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[10],[11],[19] | 
 
 | 
10.90%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[10],[11],[19] | 
 
 | 
$ 4,244
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. - Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[10],[11],[12] | 
 
 | 
0
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[13],[14],[15] | 
 
 | 
 
 | 
 | 
$ 0
 | 
 | 
| Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[13],[15],[20] | 
 
 | 
 
 | 
 | 
5.50%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[13],[15],[20] | 
 
 | 
 
 | 
 | 
10.40%
 | 
 | 
| Investments owned, fair value | 
[13],[15],[20] | 
 
 | 
 
 | 
 | 
$ 4,255
 | 
 | 
| Investment, Identifier [Axis]: Educators Resource, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 30,237
 | 
[11],[12] | 
$ 17,445
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Educators Resource, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
10.50%
 | 
[1],[2],[3],[4],[11] | 
10.50%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
15.90%
 | 
[1],[2],[3],[4],[11] | 
15.40%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 20,000
 | 
[11] | 
$ 20,000
 | 
[15] | 
| Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC – Common Units | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
22
 | 
[10],[12],[21] | 
27
 | 
[13],[14],[22] | 
| Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Common Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 58
 | 
[11],[12] | 
$ 0
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 1 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
4.10%
 | 
[1],[2],[3],[4],[11] | 
4.10%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
9.50%
 | 
[1],[2],[3],[4],[11] | 
9.00%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 6,900
 | 
[11] | 
$ 5,965
 | 
[15] | 
| Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 2 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
7.00%
 | 
[1],[2],[3],[4],[11] | 
7.00%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
12.40%
 | 
[1],[2],[3],[4],[11] | 
11.90%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 18,796
 | 
[11] | 
$ 16,250
 | 
[15] | 
| Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Common Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
0
 | 
[11],[12] | 
0
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 0
 | 
[11],[12] | 
$ 0
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11] | 
 
 | 
10.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11] | 
 
 | 
15.40%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11] | 
 
 | 
$ 12,153
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
10.00%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
14.90%
 | 
 | 
| Investments owned, fair value | 
[15] | 
 
 | 
 
 | 
 | 
$ 10,676
 | 
 | 
| Investment, Identifier [Axis]: Gladstone SOG Investments, Inc. - Common Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[14],[15] | 
 
 | 
 
 | 
 | 
713
 | 
 | 
| Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. - Line of Credit | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11] | 
 
 | 
6.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11] | 
 
 | 
11.40%
 | 
 | 
 
 | 
 | 
| Line of credit facility, available | 
[1],[2],[3],[4],[11] | 
 
 | 
$ 500
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11] | 
 
 | 
$ 1,500
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. - Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11] | 
 
 | 
9.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11] | 
 
 | 
14.40%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11] | 
 
 | 
$ 12,000
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Home Concepts Acquisition, Inc.- Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11],[12] | 
 
 | 
1,710
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 5,382
 | 
[11],[12] | 
$ 12,345
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
7.50%
 | 
[1],[2],[3],[4],[11] | 
7.50%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
12.90%
 | 
[1],[2],[3],[4],[11] | 
12.40%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 57,700
 | 
[11] | 
$ 57,700
 | 
[15] | 
| Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 1,855
 | 
[11],[12] | 
$ 10,926
 | 
[14],[15] | 
| Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
11.00%
 | 
[1],[2],[3],[4],[11] | 
11.00%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
16.40%
 | 
[1],[2],[3],[4],[11] | 
15.90%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 22,000
 | 
[11] | 
$ 22,000
 | 
[15] | 
| Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Line of Credit | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15],[20] | 
 
 | 
 
 | 
 | 
6.00%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15],[20] | 
 
 | 
 
 | 
 | 
10.90%
 | 
 | 
| Line of credit facility, available | 
[5],[6],[7],[8],[15],[20] | 
 
 | 
 
 | 
 | 
$ 0
 | 
 | 
| Investments owned, fair value | 
[15],[20] | 
 
 | 
 
 | 
 | 
$ 2,744
 | 
 | 
| Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 1 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
6.00%
 | 
[1],[2],[3],[4],[11],[19] | 
6.00%
 | 
[5],[6],[7],[8],[15],[20] | 
| Investment interest rate | 
 | 
 
 | 
11.40%
 | 
[1],[2],[3],[4],[11],[19] | 
10.90%
 | 
[5],[6],[7],[8],[15],[20] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 8,810
 | 
[11],[19] | 
$ 9,054
 | 
[15],[20] | 
| Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 2 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15],[20] | 
 
 | 
 
 | 
 | 
10.30%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15],[20] | 
 
 | 
 
 | 
 | 
15.10%
 | 
 | 
| Investments owned, fair value | 
[15],[20] | 
 
 | 
 
 | 
 | 
$ 14,268
 | 
 | 
| Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 3 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15],[20] | 
 
 | 
 
 | 
 | 
6.00%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15],[20] | 
 
 | 
 
 | 
 | 
10.90%
 | 
 | 
| Investments owned, fair value | 
[15],[20] | 
 
 | 
 
 | 
 | 
$ 1,338
 | 
 | 
| Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Line of Credit | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11],[19] | 
 
 | 
6.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11],[19] | 
 
 | 
11.40%
 | 
 | 
 
 | 
 | 
| Line of credit facility, available | 
[1],[2],[3],[4],[11],[19] | 
 
 | 
$ 0
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11],[19] | 
 
 | 
$ 2,670
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 2 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11],[19] | 
 
 | 
10.30%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11],[19] | 
 
 | 
15.60%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11],[19] | 
 
 | 
$ 13,882
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 3 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11],[19] | 
 
 | 
6.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11],[19] | 
 
 | 
11.40%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11],[19] | 
 
 | 
$ 1,301
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
0
 | 
[11],[12] | 
0
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Mason West, LLC – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 20,146
 | 
[11],[12] | 
$ 10,940
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Mason West, LLC – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
10.00%
 | 
[1],[2],[3],[4],[11] | 
10.00%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
15.40%
 | 
[1],[2],[3],[4],[11] | 
14.90%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 25,250
 | 
[11] | 
$ 25,250
 | 
[15] | 
| Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Line of Credit | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
8.00%
 | 
[1],[2],[3],[4],[11] | 
8.00%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
13.40%
 | 
[1],[2],[3],[4],[11] | 
12.90%
 | 
[5],[6],[7],[8],[15] | 
| Line of credit facility, available | 
 | 
 
 | 
$ 0
 | 
[1],[2],[3],[4],[11] | 
$ 2,000
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
4,000
 | 
[11] | 
0
 | 
[15] | 
| Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 15,457
 | 
[11],[12] | 
$ 16,263
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
10.50%
 | 
[1],[2],[3],[4],[11],[23] | 
10.50%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
14.50%
 | 
[1],[2],[3],[4],[11],[23] | 
15.40%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 61,100
 | 
[11],[23] | 
$ 42,450
 | 
[15] | 
| Investment, Identifier [Axis]: Nth Degree Investment Group, LLC – Common Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 36,309
 | 
[11],[12] | 
15,243
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Nth Degree, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[16] | 
 
 | 
8.50%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[16] | 
 
 | 
13.90%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[16] | 
 
 | 
$ 24,884
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: Old World Christmas, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 32,595
 | 
[11],[12] | 
$ 33,990
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Old World Christmas, Inc. – Secured First Lien Term Loan | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
9.50%
 | 
[1],[2],[3],[4],[11] | 
9.50%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
14.90%
 | 
[1],[2],[3],[4],[11] | 
14.40%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 43,000
 | 
[11] | 
$ 40,500
 | 
[15] | 
| Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 0
 | 
[11],[12] | 
$ 0
 | 
[14],[15] | 
| Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
5.50%
 | 
[1],[2],[3],[4],[11] | 
5.50%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
10.90%
 | 
[1],[2],[3],[4],[11] | 
10.40%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 19,256
 | 
[11] | 
$ 24,892
 | 
[15] | 
| Investment, Identifier [Axis]: Phoenix Door Systems, Inc – Line of Credit | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
7.00%
 | 
[1],[2],[3],[4],[11] | 
7.00%
 | 
[5],[6],[7],[8],[18] | 
| Investment interest rate | 
 | 
 
 | 
12.40%
 | 
[1],[2],[3],[4],[11] | 
11.90%
 | 
[5],[6],[7],[8],[18] | 
| Line of credit facility, available | 
 | 
 
 | 
$ 0
 | 
[1],[2],[3],[4],[11] | 
$ 0
 | 
[5],[6],[7],[8],[18] | 
| Unused fee percentage | 
 | 
0.30%
 | 
0.30%
 | 
[1],[2],[3],[4],[11] | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 2,750
 | 
[11] | 
2,391
 | 
[18] | 
| Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Common Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 0
 | 
[11],[12] | 
$ 0
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
11.00%
 | 
[1],[2],[3],[4],[11] | 
11.00%
 | 
[5],[6],[7],[8],[18] | 
| Investment interest rate | 
 | 
 
 | 
16.40%
 | 
[1],[2],[3],[4],[11] | 
15.90%
 | 
[5],[6],[7],[8],[18] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 2,544
 | 
[11] | 
$ 3,000
 | 
[18] | 
| Investment, Identifier [Axis]: SFEG Holdings, Inc. – Common Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 37,649
 | 
[11],[12] | 
0
 | 
[14],[15] | 
| Investment, Identifier [Axis]: SFEG Holdings, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[14],[15] | 
 
 | 
 
 | 
 | 
$ 4,444
 | 
 | 
| Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 1 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
7.00%
 | 
[1],[2],[3],[4],[11] | 
7.00%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
12.50%
 | 
[1],[2],[3],[4],[11] | 
11.90%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 54,644
 | 
[11] | 
$ 3,128
 | 
[15] | 
| Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 2 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
7.00%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
11.90%
 | 
 | 
| Investments owned, fair value | 
[15] | 
 
 | 
 
 | 
 | 
$ 12,516
 | 
 | 
| Investment, Identifier [Axis]: Schylling, Inc. – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 10,375
 | 
[11],[12] | 
$ 18,922
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Schylling, Inc. – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
11.00%
 | 
[1],[2],[3],[4],[11] | 
11.00%
 | 
[5],[6],[7],[8],[15] | 
| Investment interest rate | 
 | 
 
 | 
16.40%
 | 
[1],[2],[3],[4],[11] | 
15.90%
 | 
[5],[6],[7],[8],[15] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 27,981
 | 
[11] | 
$ 27,981
 | 
[15] | 
| Investment, Identifier [Axis]: The E3 Company, LLC – Line of Credit | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11] | 
 
 | 
5.50%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11] | 
 
 | 
10.90%
 | 
 | 
 
 | 
 | 
| Line of credit facility, available | 
[1],[2],[3],[4],[11] | 
 
 | 
$ 1,000
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11] | 
 
 | 
1,000
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: The E3 Company, LLC – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11],[12] | 
 
 | 
$ 11,233
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: The E3 Company, LLC – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11] | 
 
 | 
9.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11] | 
 
 | 
14.40%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11] | 
 
 | 
$ 33,750
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: The Maids International, LLC – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 6,392
 | 
[11],[12] | 
$ 3,200
 | 
[14],[15] | 
| Investment, Identifier [Axis]: The Maids International, LLC – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
10.50%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
15.40%
 | 
 | 
| Investments owned, fair value | 
[15] | 
 
 | 
 
 | 
 | 
$ 28,560
 | 
 | 
| Investment, Identifier [Axis]: The Maids International, LLC – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11] | 
 
 | 
10.50%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11] | 
 
 | 
15.90%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11] | 
 
 | 
$ 28,560
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: The Mountain Corporation – Common Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 0
 | 
[11],[12] | 
$ 0
 | 
[14],[15] | 
| Investment, Identifier [Axis]: The Mountain Corporation – Line of Credit | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
 | 
 
 | 
5.00%
 | 
[1],[2],[3],[4],[11],[19] | 
5.00%
 | 
[5],[6],[7],[8],[15],[20] | 
| Investment interest rate | 
 | 
 
 | 
10.40%
 | 
[1],[2],[3],[4],[11],[19] | 
9.90%
 | 
[5],[6],[7],[8],[15],[20] | 
| Line of credit facility, available | 
 | 
 
 | 
$ 0
 | 
[1],[2],[3],[4],[11],[19] | 
$ 150
 | 
[5],[6],[7],[8],[15],[20] | 
| Investments owned, fair value | 
 | 
 
 | 
0
 | 
[11],[19] | 
0
 | 
[15],[20] | 
| Investment, Identifier [Axis]: The Mountain Corporation – Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 0
 | 
[11],[12] | 
$ 0
 | 
[14],[15] | 
| Investment, Identifier [Axis]: The Mountain Corporation – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11],[19] | 
 
 | 
4.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11],[19] | 
 
 | 
9.40%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11],[19] | 
 
 | 
$ 0
 | 
 | 
 
 | 
 | 
| Investment, Identifier [Axis]: The Mountain Corporation – Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15],[20] | 
 
 | 
 
 | 
 | 
4.00%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15],[20] | 
 
 | 
 
 | 
 | 
8.90%
 | 
 | 
| Investments owned, fair value | 
[15],[20] | 
 
 | 
 
 | 
 | 
$ 0
 | 
 | 
| Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd. - Preferred Stock | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
 | 
 
 | 
$ 9,581
 | 
[11],[12] | 
$ 7,748
 | 
[14],[15] | 
| Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd. - Term Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
10.00%
 | 
 | 
| Investment interest rate | 
[5],[6],[7],[8],[15] | 
 
 | 
 
 | 
 | 
14.90%
 | 
 | 
| Investments owned, fair value | 
[15] | 
 
 | 
 
 | 
 | 
$ 18,250
 | 
 | 
| Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd., 2 | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment, reference rate and spread | 
[1],[2],[3],[4],[11] | 
 
 | 
10.00%
 | 
 | 
 
 | 
 | 
| Investment interest rate | 
[1],[2],[3],[4],[11] | 
 
 | 
15.40%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[11] | 
 
 | 
$ 18,250
 | 
 | 
 
 | 
 | 
| Non-Control/Non-Affiliate Investments | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
134.90%
 | 
[1],[2],[3],[4],[24] | 
113.00%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 620,338
 | 
[24] | 
$ 496,875
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
70.60%
 | 
[1],[2],[3],[4],[24] | 
63.60%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 324,528
 | 
[24] | 
$ 279,748
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Buildings and Real Estate | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
8.30%
 | 
[1],[2],[3],[4],[24] | 
8.70%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
1.20%
 | 
[1],[2],[3],[4],[24] | 
1.20%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 5,294
 | 
[24] | 
$ 5,391
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
18.00%
 | 
[1],[2],[3],[4],[24] | 
25.10%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 82,950
 | 
[24] | 
$ 110,450
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Healthcare, Education, and Childcare | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
4.30%
 | 
[1],[2],[3],[4],[24] | 
4.50%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Home and Office Furnishings, Housewares, and Durable Consumer Products | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
8.00%
 | 
[1],[2],[3],[4],[24] | 
8.00%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 36,703
 | 
[24] | 
$ 35,226
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Hotels, Motels, Inns, and Gaming | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
14.20%
 | 
[1],[2],[3],[4],[24] | 
9.70%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 65,100
 | 
[24] | 
$ 42,450
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Leisure, Amusement, Motion Pictures, and Entertainment | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
6.10%
 | 
[1],[2],[3],[4],[24] | 
6.40%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Oil and Gas | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[1],[2],[3],[4],[24] | 
 
 | 
7.60%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[24] | 
 
 | 
$ 34,750
 | 
 | 
 
 | 
 | 
| Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Printing and Publishing | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[1],[2],[3],[4],[24] | 
 
 | 
2.90%
 | 
 | 
 
 | 
 | 
| Investments owned, fair value | 
[24] | 
 
 | 
$ 13,500
 | 
 | 
 
 | 
 | 
| Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
20.30%
 | 
[1],[2],[3],[4],[24] | 
11.60%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 93,340
 | 
[24] | 
$ 50,842
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Aerospace and Defense | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
5.60%
 | 
[1],[2],[3],[4],[24] | 
5.00%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 25,696
 | 
[24] | 
$ 22,215
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Cargo Transport | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
2.80%
 | 
[1],[2],[3],[4],[24] | 
3.00%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
11.90%
 | 
[1],[2],[3],[4],[24] | 
3.60%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
[25] | 
 
 | 
 
 | 
 | 
$ 15,644
 | 
 | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
35.70%
 | 
[1],[2],[3],[4],[24] | 
37.40%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 164,241
 | 
[24] | 
$ 164,534
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | Buildings and Real Estate | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
5.70%
 | 
[1],[2],[3],[4],[24] | 
5.10%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
5.50%
 | 
[1],[2],[3],[4],[24] | 
11.60%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 25,528
 | 
[24] | 
$ 51,170
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | Healthcare, Education, and Childcare | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
6.60%
 | 
[1],[2],[3],[4],[24] | 
4.00%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
9.50%
 | 
[1],[2],[3],[4],[24] | 
7.70%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 43,599
 | 
[24] | 
$ 33,969
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | Hotels, Motels, Inns, and Gaming | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
3.40%
 | 
[1],[2],[3],[4],[24] | 
3.70%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | Leisure, Amusement, Motion Pictures, and Entertainment | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
2.20%
 | 
[1],[2],[3],[4],[24] | 
4.30%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | Oil and Gas | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[1],[2],[3],[4],[24] | 
 
 | 
2.40%
 | 
 | 
 
 | 
 | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | Printing and Publishing | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[1],[2],[3],[4],[24] | 
 
 | 
0.40%
 | 
 | 
 
 | 
 | 
| Non-Control/Non-Affiliate Investments | Preferred Equity | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[5],[6],[7],[8],[25] | 
 
 | 
 
 | 
 | 
1.00%
 | 
 | 
| Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
8.30%
 | 
[1],[2],[3],[4],[24] | 
0.40%
 | 
[5],[6],[7],[8],[25] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 38,229
 | 
[24] | 
$ 1,751
 | 
[25] | 
| Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Diversified/Conglomerate Manufacturing | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[5],[6],[7],[8],[25] | 
 
 | 
 
 | 
 | 
0.00%
 | 
 | 
| Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Home and Office Furnishings, Housewares, and Durable Consumer Products | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[24] | 
0.00%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Aerospace and Defense | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[24] | 
0.00%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Cargo Transport | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.10%
 | 
[1],[2],[3],[4],[24] | 
0.40%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
8.20%
 | 
[1],[2],[3],[4],[24] | 
0.00%
 | 
[5],[6],[7],[8],[25] | 
| Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only) | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[24] | 
0.00%
 | 
[5],[6],[7],[8],[25] | 
| Affiliate Investments | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
60.50%
 | 
[1],[2],[3],[4],[26] | 
58.20%
 | 
[5],[6],[7],[8],[27] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 278,226
 | 
[26] | 
$ 255,955
 | 
[27] | 
| Affiliate Investments | Secured First Lien Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
32.00%
 | 
[1],[2],[3],[4],[26] | 
35.80%
 | 
[5],[6],[7],[8],[27] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 147,354
 | 
[26] | 
$ 157,769
 | 
[27] | 
| Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[5],[6],[7],[8],[27] | 
 
 | 
 
 | 
 | 
1.00%
 | 
 | 
| Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
16.80%
 | 
[1],[2],[3],[4],[26] | 
17.70%
 | 
[5],[6],[7],[8],[27] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 77,223
 | 
[26] | 
$ 77,964
 | 
[27] | 
| Affiliate Investments | Secured First Lien Debt | Home and Office Furnishings, Housewares, and Durable Consumer Products | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
9.30%
 | 
[1],[2],[3],[4],[26] | 
9.20%
 | 
[5],[6],[7],[8],[27] | 
| Affiliate Investments | Secured First Lien Debt | Mining, Steel, Iron and Non-Precious Metals | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
4.00%
 | 
[1],[2],[3],[4],[26] | 
4.10%
 | 
[5],[6],[7],[8],[27] | 
| Affiliate Investments | Secured First Lien Debt | Telecommunications | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
1.90%
 | 
[1],[2],[3],[4],[26] | 
3.80%
 | 
[5],[6],[7],[8],[27] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 8,881
 | 
[26] | 
$ 16,800
 | 
[27] | 
| Affiliate Investments | Secured Second Lien Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
9.60%
 | 
[1],[2],[3],[4],[26] | 
5.70%
 | 
[5],[6],[7],[8],[27] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 44,140
 | 
[26] | 
$ 24,892
 | 
[27] | 
| Affiliate Investments | Secured Second Lien Debt | Diversified/Conglomerate Services | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[1],[2],[3],[4],[26] | 
 
 | 
5.40%
 | 
 | 
 
 | 
 | 
| Affiliate Investments | Secured Second Lien Debt | Chemicals, Plastics, and Rubber | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
4.20%
 | 
[1],[2],[3],[4],[26] | 
5.70%
 | 
[5],[6],[7],[8],[27] | 
| Affiliate Investments | Preferred Equity | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
11.00%
 | 
[1],[2],[3],[4],[26] | 
13.20%
 | 
[5],[6],[7],[8],[27] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 50,423
 | 
[26] | 
$ 58,051
 | 
[27] | 
| Affiliate Investments | Preferred Equity | Diversified/Conglomerate Manufacturing | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[5],[6],[7],[8],[27] | 
 
 | 
 
 | 
 | 
0.00%
 | 
 | 
| Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
1.80%
 | 
[1],[2],[3],[4],[26] | 
3.20%
 | 
[5],[6],[7],[8],[27] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 8,247
 | 
[26] | 
$ 14,126
 | 
[27] | 
| Affiliate Investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
7.10%
 | 
[1],[2],[3],[4],[26] | 
7.70%
 | 
[5],[6],[7],[8],[27] | 
| Affiliate Investments | Preferred Equity | Mining, Steel, Iron and Non-Precious Metals | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
2.10%
 | 
[1],[2],[3],[4],[26] | 
1.80%
 | 
[5],[6],[7],[8],[27] | 
| Affiliate Investments | Preferred Equity | Telecommunications | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[26] | 
0.50%
 | 
[5],[6],[7],[8],[27] | 
| Affiliate Investments | Preferred Equity | Chemicals, Plastics, and Rubber | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[26] | 
0.00%
 | 
[5],[6],[7],[8],[27] | 
| Affiliate Investments | Common Equity/ Equivalents | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
7.90%
 | 
[1],[2],[3],[4],[26] | 
3.50%
 | 
[5],[6],[7],[8],[27] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 36,309
 | 
[26] | 
$ 15,243
 | 
[27] | 
| Affiliate Investments | Common Equity/ Equivalents | Diversified/Conglomerate Services | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
7.90%
 | 
[1],[2],[3],[4],[26] | 
3.50%
 | 
[5],[6],[7],[8],[27] | 
| Affiliate Investments | Common Equity/ Equivalents | Telecommunications | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[26] | 
0.00%
 | 
[5],[6],[7],[8],[27] | 
| Control Investments | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.90%
 | 
[1],[2],[3],[4],[28] | 
0.20%
 | 
[5],[6],[7],[8],[29] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 4,244
 | 
[28] | 
$ 713
 | 
[29] | 
| Control Investments | Secured First Lien Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.90%
 | 
[1],[2],[3],[4],[28] | 
0.00%
 | 
[5],[6],[7],[8],[29] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 4,244
 | 
[28] | 
$ 0
 | 
[29] | 
| Control Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[1],[2],[3],[4],[28] | 
 
 | 
0.90%
 | 
 | 
 
 | 
 | 
| Control Investments | Secured First Lien Debt | Personal and Non-Durable Consumer Products (Manufacturing Only) | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[28] | 
0.00%
 | 
[5],[6],[7],[8],[29] | 
| Control Investments | Secured Second Lien Debt | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[28] | 
0.00%
 | 
[5],[6],[7],[8],[29] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 0
 | 
[28] | 
$ 0
 | 
[29] | 
| Control Investments | Secured Second Lien Debt | Personal and Non-Durable Consumer Products (Manufacturing Only) | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[28] | 
0.00%
 | 
[5],[6],[7],[8],[29] | 
| Control Investments | Preferred Equity | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[28] | 
0.00%
 | 
[5],[6],[7],[8],[29] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 0
 | 
[28] | 
$ 0
 | 
[29] | 
| Control Investments | Preferred Equity | Diversified/Conglomerate Manufacturing | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[1],[2],[3],[4],[28] | 
 
 | 
0.00%
 | 
 | 
 
 | 
 | 
| Control Investments | Preferred Equity | Personal and Non-Durable Consumer Products (Manufacturing Only) | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[28] | 
0.00%
 | 
[5],[6],[7],[8],[29] | 
| Control Investments | Common Equity/ Equivalents | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[28] | 
0.20%
 | 
[5],[6],[7],[8],[29] | 
| Investments owned, fair value | 
 | 
 
 | 
$ 0
 | 
[28] | 
$ 713
 | 
[29] | 
| Control Investments | Common Equity/ Equivalents | Leisure, Amusement, Motion Pictures, and Entertainment | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
[5],[6],[7],[8],[29] | 
 
 | 
 
 | 
 | 
0.20%
 | 
 | 
| Control Investments | Common Equity/ Equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only) | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Schedule of Investments [Line Items] | 
 | 
 
 | 
 
 | 
 | 
 
 | 
 | 
| Investment owned, percent of net assets | 
 | 
 
 | 
0.00%
 | 
[1],[2],[3],[4],[28] | 
0.00%
 | 
[5],[6],[7],[8],[29] | 
 | 
 |