Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED SCHEDULE OF INVESTMENTS

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CONSOLIDATED SCHEDULE OF INVESTMENTS - USD ($)
$ in Thousands
Mar. 31, 2024
Mar. 31, 2023
Schedule of Investments [Line Items]    
Cost $ 854,290 [1] $ 720,630 [2]
Fair value 920,504 [1] 753,543 [2]
Buildings and Real Estate    
Schedule of Investments [Line Items]    
Fair value 60,431 60,571
Diversified/Conglomerate Services    
Schedule of Investments [Line Items]    
Fair value 264,535 268,954
Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Fair value 49,638 37,445
Home and Office Furnishings, Housewares, and Durable Consumer Products    
Schedule of Investments [Line Items]    
Fair value 160,038 143,685
Hotels, Motels, Inns, and Gaming    
Schedule of Investments [Line Items]    
Fair value 77,366 58,713
Leisure, Amusement, Motion Pictures, and Entertainment    
Schedule of Investments [Line Items]    
Fair value 39,350 47,616
Oil and Gas    
Schedule of Investments [Line Items]    
Fair value 51,171 0
Printing and Publishing    
Schedule of Investments [Line Items]    
Fair value 14,238 0
Aerospace and Defense    
Schedule of Investments [Line Items]    
Fair value 29,064 22,215
Cargo Transport    
Schedule of Investments [Line Items]    
Fair value 13,500 14,707
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)    
Schedule of Investments [Line Items]    
Fair value 92,781 20,088
Mining, Steel, Iron and Non-Precious Metals    
Schedule of Investments [Line Items]    
Fair value 30,537 25,998
Telecommunications    
Schedule of Investments [Line Items]    
Fair value 9,002 18,987
Chemicals, Plastics, and Rubber    
Schedule of Investments [Line Items]    
Fair value 20,363 24,891
Secured First Lien Debt    
Schedule of Investments [Line Items]    
Cost 513,425 471,439
Fair value 474,856 437,517
Secured Second Lien Debt    
Schedule of Investments [Line Items]    
Cost 144,958 84,158
Fair value 138,703 75,734
Preferred Equity    
Schedule of Investments [Line Items]    
Cost 145,070 149,099
Fair value 213,480 222,585
Common Equity/ Equivalents    
Schedule of Investments [Line Items]    
Cost 50,837 15,934
Fair value 93,465 17,707
Non-Control/Non-Affiliate investments    
Schedule of Investments [Line Items]    
Cost 544,799 [3] 429,305 [4]
Fair value 622,233 [3] 496,875 [4]
Non-Control/Non-Affiliate investments | Secured First Lien Debt    
Schedule of Investments [Line Items]    
Cost 324,731 [3] 281,631 [4]
Fair value 324,348 [3] 279,748 [4]
Non-Control/Non-Affiliate investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Cost 5,950 [3] 5,750 [4]
Fair value 5,567 [3] 5,391 [4]
Non-Control/Non-Affiliate investments | Secured First Lien Debt | Diversified/Conglomerate Services    
Schedule of Investments [Line Items]    
Cost 82,950 [3] 110,450 [4]
Fair value 82,950 [3] 110,450 [4]
Non-Control/Non-Affiliate investments | Secured First Lien Debt | Home and Office Furnishings, Housewares, and Durable Consumer Products    
Schedule of Investments [Line Items]    
Cost 36,750 [3] 36,750 [4]
Fair value 36,750 [3] 35,226 [4]
Non-Control/Non-Affiliate investments | Secured First Lien Debt | Hotels, Motels, Inns, and Gaming    
Schedule of Investments [Line Items]    
Cost 65,100 [3] 42,450 [4]
Fair value 65,100 [3] 42,450 [4]
Non-Control/Non-Affiliate investments | Secured First Lien Debt | Oil and Gas    
Schedule of Investments [Line Items]    
Cost [3] 34,750  
Fair value [3] 34,750  
Non-Control/Non-Affiliate investments | Secured First Lien Debt | Printing and Publishing    
Schedule of Investments [Line Items]    
Cost [3] 13,000  
Fair value [3] 13,000  
Non-Control/Non-Affiliate investments | Secured Second Lien Debt    
Schedule of Investments [Line Items]    
Cost 93,340 [3] 54,340 [4]
Fair value 93,340 [3] 50,842 [4]
Non-Control/Non-Affiliate investments | Secured Second Lien Debt | Aerospace and Defense    
Schedule of Investments [Line Items]    
Cost 25,696 [3] 25,696 [4]
Fair value 25,696 [3] 22,215 [4]
Non-Control/Non-Affiliate investments | Secured Second Lien Debt | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)    
Schedule of Investments [Line Items]    
Cost [4]   15,644
Fair value [4]   15,644
Non-Control/Non-Affiliate investments | Preferred Equity    
Schedule of Investments [Line Items]    
Cost 82,110 [3] 79,240 [4]
Fair value 162,522 [3] 164,534 [4]
Non-Control/Non-Affiliate investments | Preferred Equity | Diversified/Conglomerate Services    
Schedule of Investments [Line Items]    
Cost 11,206 [3] 18,201 [4]
Fair value 19,759 [3] 51,170 [4]
Non-Control/Non-Affiliate investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products    
Schedule of Investments [Line Items]    
Cost 16,236 [3] 16,236 [4]
Fair value 49,650 [3] 33,969 [4]
Non-Control/Non-Affiliate investments | Common Equity/ Equivalents    
Schedule of Investments [Line Items]    
Cost 44,618 [3] 14,094 [4]
Fair value 42,023 [3] 1,751 [4]
Affiliate investments    
Schedule of Investments [Line Items]    
Cost 292,082 [5] 276,055 [6]
Fair value 295,366 [5] 255,955 [6]
Affiliate investments | Secured First Lien Debt    
Schedule of Investments [Line Items]    
Cost 179,484 [5] 185,258 [6]
Fair value 147,603 [5] 157,769 [6]
Affiliate investments | Secured First Lien Debt | Diversified/Conglomerate Services    
Schedule of Investments [Line Items]    
Cost 100,498 [5] 100,498 [6]
Fair value 77,351 [5] 77,964 [6]
Affiliate investments | Secured First Lien Debt | Telecommunications    
Schedule of Investments [Line Items]    
Cost 17,736 [5] 16,800 [6]
Fair value 9,002 [5] 16,800 [6]
Affiliate investments | Secured Second Lien Debt    
Schedule of Investments [Line Items]    
Cost 51,618 [5] 26,618 [6]
Fair value 45,363 [5] 24,892 [6]
Affiliate investments | Preferred Equity    
Schedule of Investments [Line Items]    
Cost 54,761 [5] 62,960 [6]
Fair value 50,958 [5] 58,051 [6]
Affiliate investments | Preferred Equity | Diversified/Conglomerate Services    
Schedule of Investments [Line Items]    
Cost 24,309 [5] 24,309 [6]
Fair value 8,033 [5] 14,126 [6]
Affiliate investments | Common Equity/ Equivalents    
Schedule of Investments [Line Items]    
Cost 6,219 [5] 1,219 [6]
Fair value 51,442 [5] 15,243 [6]
Control investments    
Schedule of Investments [Line Items]    
Cost 17,409 [7] 15,270 [8]
Fair value 2,905 [7] 713 [8]
Control investments | Secured First Lien Debt    
Schedule of Investments [Line Items]    
Cost 9,210 [7] 4,550 [8]
Fair value 2,905 [7] 0 [8]
Control investments | Secured Second Lien Debt    
Schedule of Investments [Line Items]    
Cost [8]   3,200
Fair value [8]   0
Control investments | Preferred Equity    
Schedule of Investments [Line Items]    
Cost 8,199 [7] 6,899 [8]
Fair value $ 0 [7] 0 [8]
Control investments | Common Equity/ Equivalents    
Schedule of Investments [Line Items]    
Cost [8]   621
Fair value [8]   $ 713
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrants    
Schedule of Investments [Line Items]    
Units 3.50% [9],[10],[11],[12],[13] 3.50% [14],[15],[16],[17],[18]
Cost $ 0 [9],[11],[13] $ 0 [14],[16],[18]
Fair value 0 [9],[11],[13] 0 [14],[16],[18]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Principal amount [14],[15],[17],[18]   2,800
Cost [14],[18]   2,800
Fair value [14],[18]   2,800
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 1    
Schedule of Investments [Line Items]    
Principal amount [9],[10],[12],[13] 3,080  
Cost [9],[13] 3,080  
Fair value [9],[13] 3,080  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 2    
Schedule of Investments [Line Items]    
Principal amount [9],[10],[12],[13] 656  
Cost [9],[13] 656  
Fair value [9],[13] $ 656  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares [9],[10],[11],[12],[13] 14,304  
Cost [9],[11],[13] $ 4,722  
Fair value [9],[11],[13] 0  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [14],[15],[17],[18]   14,000
Cost [14],[18]   14,000
Fair value [14],[18]   $ 14,000
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [9],[10],[12],[13] 14,000  
Cost [9],[13] 14,000  
Fair value [9],[13] $ 5,266  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.– Preferred Stock    
Schedule of Investments [Line Items]    
Shares [14],[15],[16],[17],[18]   14,304
Cost [14],[16],[18]   $ 4,722
Fair value [14],[16],[18]   $ 2,187
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 6,653 [10],[11],[12],[13] 6,653 [15],[16],[17],[18]
Cost $ 6,653 [11],[13] $ 6,653 [16],[18]
Fair value 48,759 [11],[13] 33,969 [16],[18]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 1    
Schedule of Investments [Line Items]    
Principal amount 17,700 [10],[12],[13] 17,700 [15],[17],[18]
Cost 17,700 [13] 17,700 [18]
Fair value 17,700 [13] 17,700 [18]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 2    
Schedule of Investments [Line Items]    
Principal amount 6,850 [10],[12],[13] 6,850 [15],[17],[18]
Cost 6,850 [13] 6,850 [18]
Fair value $ 6,850 [13] $ 6,850 [18]
Investment, Identifier [Axis]: Counsel Press, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares [15],[16],[17],[18]   6,995
Cost [16],[18]   $ 6,995
Fair value [16],[18]   27,885
Investment, Identifier [Axis]: Counsel Press, Inc. – Term Debt 1    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18]   21,100
Cost [18]   21,100
Fair value [18]   21,100
Investment, Identifier [Axis]: Counsel Press, Inc. – Term Debt 2    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18]   6,400
Cost [18]   6,400
Fair value [18]   $ 6,400
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. - Preferred Equity    
Schedule of Investments [Line Items]    
Shares [10],[11],[12],[13] 21,000  
Cost [11],[13] $ 21,000  
Fair value [11],[13] 22,181  
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Preferred Equity    
Schedule of Investments [Line Items]    
Shares [15],[16],[17],[18]   21,000
Cost [16],[18]   $ 21,000
Fair value [16],[18]   22,321
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 38,250 [10],[12],[13] 38,250 [15],[17],[18]
Cost 38,250 [13] 38,250 [18]
Fair value $ 38,250 [13] $ 38,250 [18]
Investment, Identifier [Axis]: Diligent Delivery Systems – Common Stock Warrants    
Schedule of Investments [Line Items]    
Units 8.00% [10],[11],[12],[19] 8.00% [15],[16],[17],[18]
Cost $ 500 [11],[19] $ 500 [16],[18]
Fair value 500 [11],[19] 1,724 [16],[18]
Investment, Identifier [Axis]: Diligent Delivery Systems – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 13,000 [10],[12],[19] 13,000 [15],[17],[20]
Cost 13,000 [19] 13,000 [20]
Fair value $ 13,000 [19] $ 12,983 [20]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 8,199 [9],[10],[11],[12],[13] 8,199 [14],[15],[16],[17],[18]
Cost $ 8,199 [9],[11],[13] $ 8,199 [14],[16],[18]
Fair value 0 [9],[11],[13] 0 [14],[16],[18]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [9],[10],[12],[13],[21] 9,210  
Cost [9],[13],[21] 9,210  
Fair value [9],[13],[21] $ 2,905  
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.– Term Debt    
Schedule of Investments [Line Items]    
Principal amount [4],[15],[17],[18],[22]   9,210
Cost [4],[18],[22]   9,210
Fair value [4],[18],[22]   $ 4,255
Investment, Identifier [Axis]: Educators Resource, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 8,560 [10],[11],[12],[13] 8,560 [15],[16],[17],[18]
Cost $ 8,560 [11],[13] $ 8,560 [16],[18]
Fair value 29,638 [11],[13] 17,445 [16],[18]
Investment, Identifier [Axis]: Educators Resource, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 20,000 [10],[12],[13] 20,000 [15],[17],[18]
Cost 20,000 [13] 20,000 [18]
Fair value $ 20,000 [13] $ 20,000 [18]
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC – Common Units    
Schedule of Investments [Line Items]    
Shares 4,239 [9],[10],[11],[12],[23] 4,239 [4],[15],[16],[17],[24]
Cost $ 21 [9],[11],[23] $ 21 [4],[16],[24]
Fair value $ 18 [9],[11],[23] $ 27 [4],[16],[24]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Common Stock    
Schedule of Investments [Line Items]    
Shares 16,957 [10],[11],[12],[13] 16,957 [15],[16],[17],[18]
Cost $ 11,513 [11],[13] $ 11,513 [16],[18]
Fair value 3,368 [11],[13] 0 [16],[18]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 1    
Schedule of Investments [Line Items]    
Principal amount 6,900 [10],[12],[13] 6,900 [15],[17],[18]
Cost 6,900 [13] 6,900 [18]
Fair value 6,900 [13] 5,965 [18]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 2    
Schedule of Investments [Line Items]    
Principal amount 18,796 [10],[12],[13] 18,796 [15],[17],[18]
Cost 18,796 [13] 18,796 [18]
Fair value $ 18,796 [13] $ 16,250 [18]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Common Stock    
Schedule of Investments [Line Items]    
Shares 63,747 [10],[11],[12],[13] 63,747 [15],[16],[17],[18]
Cost $ 8 [11],[13] $ 8 [16],[18]
Fair value $ 0 [11],[13] $ 0 [16],[18]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 19,280 [10],[11],[12],[13] 19,280 [15],[16],[17],[18]
Cost $ 9,583 [11],[13] $ 9,583 [16],[18]
Fair value 891 [11],[13] 0 [16],[18]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 12,200 [10],[12],[13] 12,200 [15],[17],[18]
Cost 12,200 [13] 12,200 [18]
Fair value 12,200 [13] $ 10,676 [18]
Investment, Identifier [Axis]: Gladstone SOG Investments, Inc. - Common Stock(    
Schedule of Investments [Line Items]    
Shares [15],[16],[17],[18]   100
Cost [16],[18]   $ 620
Fair value [16],[18]   $ 713
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13] 1,000  
Cost [13] 1,000  
Fair value [13] $ 1,000  
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares [10],[11],[12],[13] 3,275,000  
Cost [11],[13] $ 3,275  
Fair value [11],[13] 1,238  
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13] 12,000  
Cost [13] 12,000  
Fair value [13] $ 12,000  
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 10,080 [10],[11],[12],[13] 10,080 [15],[16],[17],[18]
Cost $ 0 [11],[13] $ 0 [16],[18]
Fair value 0 [11],[13] 12,345 [16],[18]
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 57,700 [10],[12],[13] 57,700 [15],[17],[18]
Cost 57,700 [13] 57,700 [18]
Fair value $ 57,700 [13] $ 57,700 [18]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 67,490 [10],[11],[12],[13] 67,490 [15],[16],[17],[18]
Cost $ 6,749 [11],[13] $ 6,749 [16],[18]
Fair value 2,607 [11],[13] 10,926 [16],[18]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18]   22,000
Cost [18]   22,000
Fair value [18]   22,000
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13] 22,000  
Cost [13] 22,000  
Fair value [13] 22,000  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 1    
Schedule of Investments [Line Items]    
Principal amount 16,500 [10],[12],[13],[21] 16,500 [15],[17],[18],[22]
Cost 16,500 [13],[21] 16,500 [18],[22]
Fair value 8,852 [13],[21] 9,054 [18],[22]
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 2    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13],[21] 26,000  
Cost [13],[21] 26,000  
Fair value [13],[21] 13,949  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 3    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13],[21] 2,438  
Cost [13],[21] 2,438  
Fair value [13],[21] 1,308  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Principal amount 5,000 [10],[12],[13],[21] 5,000 [15],[17],[18],[22]
Cost 5,000 [13],[21] 5,000 [18],[22]
Fair value $ 2,682 [13],[21] 2,744 [18],[22]
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 2    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18],[22]   26,000
Cost [18],[22]   26,000
Fair value [18],[22]   14,268
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 3    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18],[22]   2,438
Cost [18],[22]   2,438
Fair value [18],[22]   $ 1,338
Investment, Identifier [Axis]: J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 10,920 [10],[11],[12],[13] 10,920 [15],[16],[17],[18]
Cost $ 10,920 [11],[13] $ 10,920 [16],[18]
Fair value $ 0 [11],[13] $ 0 [16],[18]
Investment, Identifier [Axis]: Mason West, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 11,206 [10],[11],[12],[13] 11,206 [15],[16],[17],[18]
Cost $ 11,206 [11],[13] $ 11,206 [16],[18]
Fair value 19,759 [11],[13] 10,940 [16],[18]
Investment, Identifier [Axis]: Mason West, LLC – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 25,250 [10],[12],[13] 25,250 [15],[17],[18]
Cost 25,250 [13] 25,250 [18]
Fair value 25,250 [13] 25,250 [18]
Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18]   0
Cost [18]   0
Fair value [18]   $ 0
Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares [15],[16],[17],[18]   6,600
Cost [16],[18]   $ 6,600
Fair value [16],[18]   16,263
Investment, Identifier [Axis]: Nocturne Luxury Villas, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18]   42,450
Cost [18]   42,450
Fair value [18]   $ 42,450
Investment, Identifier [Axis]: Nocturne Villa Rentals, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13] 4,000  
Cost [13] 4,000  
Fair value [13] $ 4,000  
Investment, Identifier [Axis]: Nocturne Villa Rentals, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares [10],[11],[12],[13] 6,600  
Cost [11],[13] $ 6,600  
Fair value [11],[13] 12,266  
Investment, Identifier [Axis]: Nocturne Villa Rentals, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13],[25] 61,100  
Cost [13],[25] 61,100  
Fair value [13],[25] $ 61,100  
Investment, Identifier [Axis]: Nth Degree Investment Group, LLC – Common Stock    
Schedule of Investments [Line Items]    
Shares 17,216,976 [10],[11],[12],[13] 14,360,000 [15],[16],[17],[18]
Cost $ 6,219 [11],[13] $ 1,219 [16],[18]
Fair value 51,442 [11],[13] $ 15,243 [16],[18]
Investment, Identifier [Axis]: Nth Degree, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[26] 25,000  
Cost [26] 25,000  
Fair value [26] $ 25,000  
Investment, Identifier [Axis]: Old World Christmas, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 6,180 [10],[11],[12],[13] 6,180 [15],[16],[17],[18]
Cost $ 0 [11],[13] $ 0 [16],[18]
Fair value 30,638 [11],[13] 33,990 [16],[18]
Investment, Identifier [Axis]: Old World Christmas, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 43,000 [10],[12],[13] 40,500 [15],[17],[18]
Cost 43,000 [13] 40,500 [18]
Fair value $ 43,000 [13] $ 40,500 [18]
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 158,598 [10],[11],[12],[13] 158,598 [14],[15],[16],[17]
Cost $ 19,730 [11],[13] $ 19,730 [14],[16]
Fair value 0 [11],[13] 0 [14],[16]
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 26,618 [10],[12],[13] 26,618 [15],[17],[18]
Cost 26,618 [13] 26,618 [18]
Fair value $ 20,363 [13] 24,892 [18]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc – Line of Credit    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[20]   2,550
Cost [20]   2,550
Fair value [20]   $ 2,391
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Common Stock    
Schedule of Investments [Line Items]    
Shares 4,221 [10],[11],[12],[13] 4,221 [15],[16],[17],[18]
Cost $ 1,830 [11],[13] $ 1,830 [16],[18]
Fair value 0 [11],[13] 0 [16],[18]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13] 2,750  
Cost [13] 2,750  
Fair value [13] 2,750  
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 3,200 [10],[12],[13] 3,200 [15],[17],[20]
Cost 3,200 [13] 3,200 [20]
Fair value $ 2,817 [13] $ 3,000 [20]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Common Stock    
Schedule of Investments [Line Items]    
Shares 18,721 [10],[11],[12],[13] 221,500 [15],[16],[17],[18]
Cost $ 30,746 [11],[13] $ 222 [16],[18]
Fair value 38,137 [11],[13] $ 0 [16],[18]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares [15],[16],[17],[18]   29,577
Cost [16],[18]   $ 4,643
Fair value [16],[18]   4,444
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13] 54,644  
Cost [13] 54,644  
Fair value [13] $ 54,644  
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 1    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18]   3,128
Cost [18]   3,128
Fair value [18]   3,128
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 2    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18]   12,516
Cost [18]   12,516
Fair value [18]   $ 12,516
Investment, Identifier [Axis]: Schylling, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 4,000 [10],[11],[12],[13] 4,000 [15],[16],[17],[18]
Cost $ 4,000 [11],[13] $ 4,000 [16],[18]
Fair value 11,369 [11],[13] 18,922 [16],[18]
Investment, Identifier [Axis]: Schylling, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Principal amount 27,981 [10],[12],[13] 27,981 [15],[17],[18]
Cost 27,981 [13] 27,981 [18]
Fair value 27,981 [13] $ 27,981 [18]
Investment, Identifier [Axis]: The E3 Company, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13] 1,000  
Cost [13] 1,000  
Fair value [13] $ 1,000  
Investment, Identifier [Axis]: The E3 Company, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Shares [10],[11],[12],[13] 11,233  
Cost [11],[13] $ 11,233  
Fair value [11],[13] 16,421  
Investment, Identifier [Axis]: The E3 Company, LLC – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13] 33,750  
Cost [13] 33,750  
Fair value [13] $ 33,750  
Investment, Identifier [Axis]: The Maids International, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Shares 6,640 [10],[11],[12],[13] 6,640 [15],[16],[17],[18]
Cost $ 6,640 [11],[13] $ 6,640 [16],[18]
Fair value 5,426 [11],[13] 3,200 [16],[18]
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [10],[12],[13] 28,560  
Cost [13] 28,560  
Fair value [13] $ 28,560  
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18]   28,560
Cost [18]   28,560
Fair value [18]   $ 28,560
Investment, Identifier [Axis]: The Mountain Corporation – Common Stock    
Schedule of Investments [Line Items]    
Shares [15],[16],[17],[18]   751,000
Cost [16],[18]   $ 1
Fair value [16],[18]   0
Investment, Identifier [Axis]: The Mountain Corporation – Line of Credit    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18],[22]   4,550
Cost [18],[22]   4,550
Fair value [18],[22]   $ 0
Investment, Identifier [Axis]: The Mountain Corporation – Preferred Stock    
Schedule of Investments [Line Items]    
Shares [15],[16],[17],[18]   6,899
Cost [16],[18]   $ 6,899
Fair value [16],[18]   0
Investment, Identifier [Axis]: The Mountain Corporation – Term Debt    
Schedule of Investments [Line Items]    
Principal amount [15],[17],[18],[22]   3,200
Cost [18],[22]   3,200
Fair value [18],[22]   $ 0
Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd. - Preferred Stock    
Schedule of Investments [Line Items]    
Shares 6,000 [10],[11],[12],[13] 6,000 [15],[16],[17],[18]
Cost $ 6,000 [11],[13] $ 6,000 [16],[18]
Fair value 12,287 [11],[13] 7,748 [16],[18]
Investment, Identifier [Axis]: Utah Pacific Bridge & Steel, Ltd. - Term Debt    
Schedule of Investments [Line Items]    
Principal amount 18,250 [10],[12],[13] 18,250 [15],[17],[18]
Cost 18,250 [13] 18,250 [18]
Fair value $ 18,250 [13] $ 18,250 [18]
[1] Cumulative gross unrealized appreciation for federal income tax purposes is $180.5 million; cumulative gross unrealized depreciation for federal income tax purposes is $115.8 million. Cumulative net unrealized appreciation is $64.7 million, based on a tax cost of $855.8 million.
[2] Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.
[3] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.
[4] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.
[5] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.
[6] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.
[7] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.
[8] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.
[9] One of our affiliated funds, Gladstone Capital Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
[10] Represents the principal balance, presented in thousands, for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.
[11] Security is non-income producing.
[12] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.
[13] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[14] One of our affiliated funds, Gladstone Capital Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
[15] Represents the principal balance, presented in thousands, for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.
[16] Security is non-income producing.
[17] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.
[18] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[19] Fair value was based on the expected exit or payoff amount, where such event has occurred or is expected to occur imminently.
[20] Fair value was based on internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[21] Debt security is on non-accrual status.
[22] Debt security is on non-accrual status.
[23] Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible into class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[24] Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible into class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[25] Debt security is subject to an interest rate ceiling.
[26] Fair value was based on internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.