Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS - Narrative (Details)

v3.22.4
INVESTMENTS - Narrative (Details)
$ in Thousands
 1 Months Ended 2 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2022
USD ($)
portfolioCompany
state
investment
industry
Oct. 30, 2022
USD ($)
Nov. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
portfolioCompany
state
investment
industry
Sep. 30, 2022
USD ($)
investment
Oct. 31, 2022
USD ($)
Summary of Investment Holdings [Line Items]            
Number of proprietary investments | investment 45     45 46  
Investments owned, fair value $ 621,739     $ 621,739 $ 649,615  
Cost $ 640,776     $ 640,776 656,053  
Number of investment portfolio company | portfolioCompany 50     50    
Number of states which have invested in the company location | state 24     24    
Number of industries that have made investments | industry 13     13    
Weighted average investment owned, at cost, amount $ 12,800     $ 12,800 12,600  
Uncollectible receivables allowance, minimum required day for uncollectible adjustment       90 days    
Gross receivables from portfolio companies 600     $ 600 500  
Allowance for uncollectible receivables 0     0 0  
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest ($843 uncalled capital commitment            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 156 [1],[2],[3],[4]     156 [1],[2],[3],[4] 6,397 [5],[6],[7]  
Cost 0 [1],[2],[3],[4]     0 [1],[2],[3],[4] 1,223 [5],[6],[7]  
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 13,189 [2],[3]     13,189 [2],[3] 13,734 [6],[8]  
Cost 4,283 [2],[3]     4,283 [2],[3] 4,283 [6],[8]  
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,613 [2],[3]     1,613 [2],[3] 1,773 [6],[8]  
Cost 3,000 [2],[3]     3,000 [2],[3] 3,000 [6],[8]  
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 200     200    
Proceeds from equity     $ 6,000      
Realized investment gains     $ 4,400      
Cost 0     0    
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 749 [2],[3]     749 [2],[3] 1,017 [6],[8]  
Cost 1,000 [2],[3]     1,000 [2],[3] 1,000 [6],[8]  
Investment, Identifier [Axis]: R2i Holdings, LLC            
Summary of Investment Holdings [Line Items]            
Net proceeds from the sale of investments 19,200          
Investment, Identifier [Axis]: WorkforceQA, LLC – Common Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 383 [2],[3]     383 [2],[3] 456 [6],[8]  
Cost 500 [2],[3]     500 [2],[3] 500 [6],[8]  
Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,998 [9]     1,998 [9] 3,020 [10]  
Cost 3,698 [9]     3,698 [9] 3,698 [10]  
Investment, Identifier [Axis]: ALS Education, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,985 [11]     1,985 [11] 0 [12]  
Cost 2,000 [11]     2,000 [11] 0 [12]  
Investment, Identifier [Axis]: ALS Education, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 19,215 [11]     19,215 [11] 19,468 [12]  
Cost 19,360 [11]     19,360 [11] 19,690 [12]  
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [2] 21,892     21,892 21,973  
Cost [2] 21,892     21,892 21,973  
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Common Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Cost 1,500 [2],[3]     1,500 [2],[3] 1,500 [6],[8]  
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [11]     0 [11] 0 [12]  
Cost 0 [11]     0 [11] 0 [12]  
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 5,480 [11]     5,480 [11] 5,350 [12]  
Cost 5,672 [11]     5,672 [11] 5,625 [12]  
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 2,940     2,940    
Cost [11] 3,000     3,000    
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12],[13]         8,741  
Cost [12],[13]         9,000  
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 8,820     8,820    
Cost [11] 9,000     9,000    
Investment, Identifier [Axis]: Axios Industrial Group, LLC– Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12],[13]         2,914  
Cost [12],[13]         3,000  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Common Stock Warrant            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[3],[14]     0 [2],[3],[14] 25 [6],[8],[15]  
Cost 0 [2],[3],[14]     0 [2],[3],[14] 0 [6],[8],[15]  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,104 [11],[14]     1,104 [11],[14] 1,146 [12],[15]  
Cost 1,200 [11],[14]     1,200 [11],[14] 1,200 [12],[15]  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,137 [2],[3],[14]     1,137 [2],[3],[14] 2,718 [6],[8],[15]  
Cost 2,024 [2],[3],[14]     2,024 [2],[3],[14] 2,024 [6],[8],[15]  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 5,520 [11],[14]     5,520 [11],[14] 5,730 [12],[15]  
Cost 6,000 [11],[14]     6,000 [11],[14] 6,000 [12],[15]  
Investment, Identifier [Axis]: B. Riley Financial, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [16],[17] 2,358     2,358    
Cost 2,416 [16],[17]     2,416 [16],[17]   $ 2,400
Investment, Identifier [Axis]: CHA Holdings, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 2,760 [9],[18]     2,760 [9],[18] 2,700 [10],[19]  
Cost 2,969 [9],[18]     2,969 [9],[18] 2,967 [10],[19]  
Investment, Identifier [Axis]: CPM Holdings, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 778 [9]     778 [9] 758 [10]  
Cost 798 [9]     798 [9] 798 [10]  
Investment, Identifier [Axis]: Café Zupas – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,970 [11]     1,970 [11] 1,958 [12]  
Cost 1,970 [11]     1,970 [11] 1,970 [12]  
Investment, Identifier [Axis]: Café Zupas – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 0     0    
Cost [11] 0     0    
Investment, Identifier [Axis]: Café Zupas – Line of Credit,            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12]         0  
Cost [12]         0  
Investment, Identifier [Axis]: Café Zupas – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 23,460 [11]     23,460 [11] 23,313 [12]  
Cost 23,460 [11]     23,460 [11] 23,460 [12]  
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Common Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,179 [2],[3]     1,179 [2],[3] 647 [6],[8]  
Cost 800 [2],[3]     800 [2],[3] 300 [6],[8]  
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 798 [2],[3]     798 [2],[3] 798 [6],[8]  
Cost 500 [2],[3]     500 [2],[3] 500 [6],[8]  
Investment, Identifier [Axis]: Chinese Yellow Pages Company – Line of Credit,            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[20],[21]     0 [2],[20],[21] 0 [8],[22],[23]  
Cost 107 [2],[20],[21]     107 [2],[20],[21] 107 [8],[22],[23]  
Investment, Identifier [Axis]: Circuitronics EMS Holdings LLC – Common Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [6],[8]         0  
Cost [6],[8]         921  
Investment, Identifier [Axis]: DKI Ventures, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 4,407 [11]     4,407 [11] 4,554 [12]  
Cost 5,915 [11]     5,915 [11] 5,915 [12]  
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Common Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 71 [2],[3]     71 [2],[3] 1,147 [6],[8]  
Cost 580 [2],[3]     580 [2],[3] 580 [6],[8]  
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 7,585 [2]     7,585 [2] 7,665 [8]  
Cost 7,585 [2]     7,585 [2] 7,665 [8]  
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12]         23,142  
Cost [12]         24,360  
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt 2            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 21,620     21,620    
Cost [11] 22,289     22,289    
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. (S) – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 2,452 [11],[14],[24]     2,452 [11],[14],[24] 2,550 [8],[15]  
Cost 6,140 [11],[14],[24]     6,140 [11],[14],[24] 6,140 [8],[15]  
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.(S) – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[3],[14]     0 [2],[3],[14] 0 [6],[8],[15]  
Cost 5,466 [2],[3],[14]     5,466 [2],[3],[14] 5,466 [6],[8],[15]  
Investment, Identifier [Axis]: Eegee’s LLC – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 2,865 [11]     2,865 [11] 2,910 [12]  
Cost 3,000 [11]     3,000 [11] 3,000 [12]  
Investment, Identifier [Axis]: Eegee’s LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [11]     0 [11] 0 [12]  
Cost 0 [11]     0 [11] 0 [12]  
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 16,235     16,235    
Cost [11] 17,000     17,000    
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12]         16,490  
Cost [12]         17,000  
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 4,935 [11]     4,935 [11] 4,885 [12]  
Cost 5,043 [11]     5,043 [11] 5,023 [12]  
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [11]     0 [11] 0 [12]  
Cost 0 [11]     0 [11] 0 [12]  
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 4,915 [2],[3]     4,915 [2],[3] 2,842 [6],[8],[15]  
Cost 3,840 [2],[3]     3,840 [2],[3] 3,840 [6],[8],[15]  
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 1            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 23,197 [11]     23,197 [11] 22,962 [12]  
Cost 23,700 [11]     23,700 [11] 23,611 [12]  
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 2            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 4,464 [11]     4,464 [11] 4,407 [12]  
Cost 4,561 [11]     4,561 [11] 4,532 [12]  
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [11]     0 [11] 0 [12]  
Cost 0 [11]     0 [11] 0 [12]  
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12]         22,134  
Cost [12]         22,500  
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 22,050     22,050    
Cost [11] 22,500     22,500    
Investment, Identifier [Axis]: FES Resources Holdings LLC – Common Equity Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Cost 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Investment, Identifier [Axis]: FES Resources Holdings LLC – Preferred Equity Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Cost 6,350 [2],[3]     6,350 [2],[3] 6,350 [6],[8]  
Investment, Identifier [Axis]: Fix-It Group, LLC – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 3,250 [11]     3,250 [11] 0 [12],[19]  
Cost 3,250 [11]     3,250 [11] 0 [12],[19]  
Investment, Identifier [Axis]: Fix-It Group, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,000 [11]     1,000 [11] 0 [12],[19]  
Cost 1,000 [11]     1,000 [11] 0 [12],[19]  
Investment, Identifier [Axis]: Fix-It Group, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 10,000 [11]     10,000 [11] 9,950 [12],[19]  
Cost 10,000 [11]     10,000 [11] 10,000 [12],[19]  
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Convertible Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 45 [2],[17]     45 [2],[17] 55 [8],[25]  
Cost 198 [2],[17]     198 [2],[17] 198 [8],[25]  
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Cost 500 [2],[3]     500 [2],[3] 500 [6],[8]  
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock Warrant            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Cost 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 31,000     31,000 58  
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC(S) – Common Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 31 [3],[14],[26]     31 [3],[14],[26] 58 [6],[15],[27]  
Cost 22 [3],[14],[26]     22 [3],[14],[26] 22 [6],[15],[27]  
Investment, Identifier [Axis]: GFRC 360, LLC – Common Stock Warrants            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Cost 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Investment, Identifier [Axis]: GFRC 360, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 803 [11]     803 [11] 681 [12]  
Cost 840 [11]     840 [11] 700 [12]  
Investment, Identifier [Axis]: GFRC 360, LLC – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 636 [2],[3]     636 [2],[3] 551 [6],[8]  
Cost 1,025 [2],[3]     1,025 [2],[3] 1,025 [6],[8]  
Investment, Identifier [Axis]: GFRC 360, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 956 [11]     956 [11] 973 [12]  
Cost 1,000 [11]     1,000 [11] 1,000 [12]  
Investment, Identifier [Axis]: GSM MidCo LLC – Common Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,595 [2],[3]     1,595 [2],[3] 1,359 [6],[8]  
Cost 767 [2],[3]     767 [2],[3] 767 [6],[8]  
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 28,512 [11],[17]     28,512 [11],[17] 28,800 [12],[25]  
Cost 28,800 [11],[17]     28,800 [11],[17] 28,800 [12],[25]  
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Warrant            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 446 [2],[3]     446 [2],[3] 19 [6],[8]  
Cost 19 [2],[3]     19 [2],[3] 19 [6],[8]  
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 2,488 [11],[17]     2,488 [11],[17] 2,481 [12],[25]  
Cost 2,477 [11],[17]     2,477 [11],[17] 2,476 [12],[25]  
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 2,090 [11],[17]     2,090 [11],[17] 2,084 [12],[25]  
Cost 2,070 [11],[17]     2,070 [11],[17] 2,069 [12],[25]  
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 9,950 [11]     9,950 [11] 9,925 [12],[19]  
Cost 10,000 [11]     10,000 [11] 10,000 [12],[19]  
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,493 [11]     1,493 [11] 1,489 [12],[19]  
Cost 1,500 [11]     1,500 [11] 1,500 [12],[19]  
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 914 [2],[3]     914 [2],[3] 945 [6],[8]  
Cost 956 [2],[3]     956 [2],[3] 956 [6],[8]  
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 1            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 15,920 [11]     15,920 [11] 15,880 [12],[19]  
Cost 16,000 [11]     16,000 [11] 16,000 [12],[19]  
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 2            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 7,960 [11]     7,960 [11] 7,940 [12],[19]  
Cost 8,000 [11]     8,000 [11] 8,000 [12],[19]  
Investment, Identifier [Axis]: Imperative Holdings Corporation – Preferred Equity Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,954 [2],[3]     1,954 [2],[3] 2,028 [6],[8]  
Cost 632 [2],[3]     632 [2],[3] 632 [6],[8]  
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 22,916 [11]     22,916 [11] 23,295 [12]  
Cost 23,225 [11]     23,225 [11] 23,968 [12]  
Investment, Identifier [Axis]: LWO Acquisitions Company LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [8],[28]         0  
Cost [8],[28]         95  
Investment, Identifier [Axis]: Leeds Acquisition Holdings, LLC            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 200     200 6,400  
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [2],[17] 3,396     3,396    
Cost [2],[17] 3,695     3,695    
Investment, Identifier [Axis]: Lonestar EMS, LLC – Common Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [2],[3]     0 [2],[3] 0 [6],[8]  
Cost 6,750 [2],[3]     6,750 [2],[3] 6,750 [6],[8]  
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [8],[25]         3,030  
Cost [8],[25]         3,250  
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12]         0  
Cost [12]         0  
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 7,972 [2]     7,972 [2] 8,151 [8]  
Cost 7,000 [2]     7,000 [2] 7,000 [8]  
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 19,325 [11]     19,325 [11] 19,779 [12]  
Cost 20,455 [11]     20,455 [11] 20,820 [12]  
Investment, Identifier [Axis]: NetFortris Corp. – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 264 [2],[3]     264 [2],[3] 469 [6],[8]  
Cost 789 [2],[3]     789 [2],[3] 789 [6],[8]  
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 18,223 [11]     18,223 [11] 18,558 [12]  
Cost 18,619 [11]     18,619 [11] 18,913 [12]  
Investment, Identifier [Axis]: PIC 360, LLC – Common Equity Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 3,603 [2],[3]     3,603 [2],[3] 3,454 [6],[8]  
Cost 1 [2],[3]     1 [2],[3] 1 [6],[8]  
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 1            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 27,930 [11]     27,930 [11] 27,825 [12]  
Cost 27,963 [11]     27,963 [11] 27,961 [12]  
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 2            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 4,988 [11]     4,988 [11] 4,969 [12]  
Cost 4,993 [11]     4,993 [11] 4,993 [12]  
Investment, Identifier [Axis]: R2i Holdings, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [25],[29]         829  
Cost [25],[29]         829  
Investment, Identifier [Axis]: R2i Holdings, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [25],[29]         18,000  
Cost [25],[29]         18,000  
Investment, Identifier [Axis]: Salt & Straw, LLC – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 2,145 [11]     2,145 [11] 0 [12]  
Cost 2,200 [11]     2,200 [11] 0 [12]  
Investment, Identifier [Axis]: Salt & Straw, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 780 [11]     780 [11] 800 [12]  
Cost 800 [11]     800 [11] 800 [12]  
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,430 [2],[3]     1,430 [2],[3] 2,584 [6],[8]  
Cost 2,500 [2],[3]     2,500 [2],[3] 2,500 [6],[8]  
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12],[13]         11,619  
Cost [12],[13]         11,887  
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 11,264     11,264    
Cost [11] 11,857     11,857    
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 160 [2],[3]     160 [2],[3] 153 [6],[8]  
Cost 98 [2],[3]     98 [2],[3] 98 [6],[8]  
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 11,484 [11],[17]     11,484 [11],[17] 11,074 [12],[25]  
Cost 11,863 [11],[17]     11,863 [11],[17] 11,679 [12],[25]  
Investment, Identifier [Axis]: Sea Link International IRB, Inc.– Common Equity Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 169 [2],[3]     169 [2],[3] 105 [6],[8]  
Cost 823 [2],[3]     823 [2],[3] 823 [6],[8]  
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Common Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,701 [2],[3]     1,701 [2],[3] 1,500 [6],[8]  
Cost 1,500 [2],[3]     1,500 [2],[3] 1,500 [6],[8]  
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12],[13]         13,500  
Cost [12],[13]         13,500  
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 13,264     13,264    
Cost [11] 13,500     13,500    
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,625 [11],[18]     1,625 [11],[18] 1,886 [12],[19]  
Cost 1,650 [11],[18]     1,650 [11],[18] 1,900 [12],[19]  
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Deb            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12],[19]         31,481  
Cost [12],[19]         31,326  
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11],[18] 30,440     30,440    
Cost [11],[18] 30,538     30,538    
Investment, Identifier [Axis]: Springfield, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 29,850 [11]     29,850 [11] 29,738 [12]  
Cost 30,000 [11]     30,000 [11] 30,000 [12]  
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Common Equity Units            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 2,594 [2],[3]     2,594 [2],[3] 2,337 [6],[8]  
Cost 500 [2],[3]     500 [2],[3] 500 [6],[8]  
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 900 [2],[17]     900 [2],[17] 1,000 [8],[25]  
Cost 900 [2],[17]     900 [2],[17] 1,000 [8],[25]  
Investment, Identifier [Axis]: Tailwind Smith Cooper Intermediate Corporation – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 4,294 [9]     4,294 [9] 4,313 [10]  
Cost 4,835 [9]     4,835 [9] 4,829 [10]  
Investment, Identifier [Axis]: Targus Cayman HoldCo Ltd.            
Summary of Investment Holdings [Line Items]            
Realized investment gains   $ 5,900        
Net proceeds from the sale of investments   $ 8,000        
Investment, Identifier [Axis]: Targus Cayman HoldCo, Ltd. – Common Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [6],[29],[30]         7,978  
Cost [6],[29],[30]         2,062  
Investment, Identifier [Axis]: Total Safety Holdings, LLC – Common Equity            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 44 [2],[3]     44 [2],[3] 50 [6],[8]  
Cost 499 [2],[3]     499 [2],[3] 499 [6],[8]  
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Common Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 675 [2],[3]     675 [2],[3] 672 [6],[8]  
Cost 250 [2],[3]     250 [2],[3] 250 [6],[8]  
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Preferred Stock            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 125 [2],[3]     125 [2],[3] 120 [6],[8]  
Cost 75 [2],[3]     75 [2],[3] 75 [6],[8]  
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 498 [11]     498 [11] 495 [12]  
Cost 500 [11]     500 [11] 500 [12]  
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 10,945 [11]     10,945 [11] 10,890 [12]  
Cost 11,000 [11]     11,000 [11] 11,000 [12]  
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12],[13]         0  
Cost [12],[13]         0  
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12],[13]         0  
Cost [12],[13]         0  
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12],[13]         15,000  
Cost [12],[13]         14,628  
Investment, Identifier [Axis]: Unirac, Inc. – Delayed Draw Term Loan            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 0     0    
Cost [11] 0     0    
Investment, Identifier [Axis]: Unirac, Inc. – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 703     703    
Cost [11] 700     700    
Investment, Identifier [Axis]: Unirac, Inc. – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 15,019     15,019    
Cost [11] 14,606     14,606    
Investment, Identifier [Axis]: Viva Railings, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 0 [11]     0 [11] 0 [12]  
Cost 0 [11]     0 [11] 0 [12]  
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 21,500     21,500    
Cost [11] 21,800     21,800    
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12]         21,364  
Cost [12]         21,800  
Investment, Identifier [Axis]: WB Xcel Holdings, LLC            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 5,835 [2],[3]     5,835 [2],[3] 5,687 [6],[8]  
Cost 2,750 [2],[3]     2,750 [2],[3] 2,750 [6],[8]  
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 1,468 [2]     1,468 [2] 1,468 [8]  
Cost 1,468 [2]     1,468 [2] 1,468 [8]  
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 9,900 [2]     9,900 [2] 9,925 [8]  
Cost 9,900 [2]     9,900 [2] 9,925 [8]  
Investment, Identifier [Axis]: WorkforceQA, LLC – Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [11] 0     0    
Cost [11] 0     0    
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value 9,987 [11],[31]     9,987 [11],[31] 9,975 [12],[19],[32]  
Cost 10,000 [11],[31]     10,000 [11],[31] 10,000 [12],[19],[32]  
Investment, Identifier [Axis]: WorkforceQA, LLC– Line of Credit            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value [12],[19]         0  
Cost [12],[19]         0  
Principal or Proprietary Transactions            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value $ 611,900     $ 611,900 $ 630,800  
Syndicated Investments            
Summary of Investment Holdings [Line Items]            
Number of proprietary investments | investment 5     5 6  
Investments owned, fair value $ 9,900     $ 9,900 $ 18,800  
Investment Portfolio Benchmark | Investment Type Concentration Risk | Principal or Proprietary Transactions            
Summary of Investment Holdings [Line Items]            
Concentration risk, percentage       98.40% 97.10%  
Investment Portfolio Benchmark | Investment Type Concentration Risk | Syndicated Investments            
Summary of Investment Holdings [Line Items]            
Concentration risk, percentage       1.60% 2.90%  
Investment Portfolio Benchmark | Customer Concentration Risk | Five Largest Portfolio Investments            
Summary of Investment Holdings [Line Items]            
Investments owned, fair value $ 175,400     $ 175,400 $ 174,500  
Concentration risk, percentage       28.20% 26.90%  
[1] Fair value was based on net asset value provided by the fund as a practical expedient.
[2] Fair value was based on the total enterprise value of the portfolio company, which was then allocated to the portfolio company’s securities in order of their relative priority in the capital structure.
[3] Security is non-income producing.
[4] There are certain limitations on our ability to withdraw our partnership interest prior to dissolution of the entity, which must occur no later than May 9, 2024 or two years after all outstanding leverage has matured.
[5] Fair value was based on net asset value provided by the fund as a practical expedient.
[6] Security is non-income producing.
[7] There are certain limitations on our ability to withdraw our partnership interest prior to dissolution of the entity, which must occur no later than May 9, 2024 or two years after all outstanding leverage has matured.
[8] Fair value was based on the total enterprise value of the portfolio company, which was then allocated to the portfolio company’s securities in order of their relative priority in the capital structure.
[9] Fair value was based on the indicative bid price on or near December 31, 2022, offered by the respective syndication agent’s trading desk.
[10] Fair value was based on the indicative bid price on or near September 30, 2022, offered by the respective syndication agent’s trading desk.
[11] Fair value was based on an internal yield analysis or on estimates of value submitted by ICE Data Pricing and Reference Data, LLC (“ICE”).
[12] Fair value was based on an internal yield analysis or on estimates of value submitted by ICE Data Pricing and Reference Data, LLC (“ICE”).
[13] The cash interest rate on this investment was indexed to the 30-day Secured Overnight Financing Rate (“SOFR”), which was 3.04% as of September 30, 2022.
[14] One of our affiliated funds, Gladstone Investment Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
[15] One of our affiliated funds, Gladstone Investment Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
[16] Our investment in B. Riley was valued using Level 1 inputs within the ASC 820 fair value hierarchy. B. Riley 6.75% senior notes are traded on the Nasdaq Global Select Market under the trading symbol “RILYO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[17] Debt security has a fixed interest rate.
[18] The cash interest rate on this investment was indexed to 90-day LIBOR, which was 4.77% as of December 31, 2022.
[19] The cash interest rate on this investment was indexed to 90-day LIBOR, which was 3.75% as of September 30, 2022.
[20] Investment maturity date has passed. Investment continues to make applicable interest payments.
[21] The cash interest rate on this investment was indexed to the U.S. Prime Rate (“PRIME”), which was 7.50% as of December 31, 2022.
[22] Investment maturity date has passed. Investment continues to make applicable interest payments.
[23] The cash interest rate on this investment was indexed to the U.S. Prime Rate (“PRIME”), which was 6.25% as of September 30, 2022.
[24] Debt security is on non-accrual status.
[25] Debt security has a fixed interest rate.
[26] Our investment in Funko was valued using Level 2 inputs within the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) fair value hierarchy. Our common units in Funko are convertible to 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.
[27] Our investment in Funko was valued using Level 2 inputs within the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) Topic 820, “Fair Value Measurements and Disclosures" (“ASC 820”) fair value hierarchy. Our common units in Funko are convertible to 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.
[28] Debt security does not have a stated interest rate that is payable thereon.
[29] Fair value was based on the expected exit or payoff amount, where such event has occurred or is expected to occur imminently.
[30] Investment was exited subsequent to September 30, 2022. Refer to Note 15 – Subsequent Events in the accompanying Notes to the Consolidated Financial Statements for additional information.
[31] The Company has entered into an agreement that entitles it to the "last out" tranche of the first lien secured loans, whereby the "first out" tranche will receive priority as to the "last out" tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of LIBOR plus 6.5% (Floor 1.0%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
[32] The Company has entered into an agreement that entitles it to the "last out" tranche of the first lien secured loan, whereby the "first out" tranche will receive priority as to the "last out" tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of LIBOR plus 6.50% (Floor 1.0%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.