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Investments - Fair Value of Portfolio of Investments by Geographic Region and Industry (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]      
Total investments at fair value $ 1,016,332 $ 1,067,009  
Percentage of Net Assets 191.96% 195.04%  
Investment, Identifier [Axis]: Affiliate Investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 49,985 [1] $ 51,456 [2] $ 2,084
Percentage of Net Assets 9.44% 9.41%  
Investment, Identifier [Axis]: Affiliate Investments Debt Investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 23,656 [1] $ 23,586 [2]  
Investment, Identifier [Axis]: Affiliate Investments Debt Investments Health Care Technology      
Schedule of Investments [Line Items]      
Total investments at fair value $ 23,656 $ 23,586  
Percentage of Net Assets 4.47% 4.31%  
Investment, Identifier [Axis]: Affiliate Investments Debt Investments Health Care Technology Gynesonics, Inc. Investment Type Senior Secured SOFR+8.75%, 8.00% ceiling, 5.00% ETP Initial Acquisition Date 3/1/2023 Maturity Date 11/30/2026      
Schedule of Investments [Line Items]      
Total investments at fair value $ 23,656 $ 23,586  
Investment, Identifier [Axis]: Affiliate Investments Debt Investments Senior Secured Gynesonics, Inc.      
Schedule of Investments [Line Items]      
Total investments at fair value 23,656 [1] 23,586 [2]  
Investment, Identifier [Axis]: Affiliate Investments Debt investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 23,656 $ 23,586  
Percentage of Net Assets 4.47% 4.31%  
Investment, Identifier [Axis]: Affiliate Investments Equity Investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 25,910 [1] $ 26,894 [2] 1,174
Investment, Identifier [Axis]: Affiliate Investments Equity Investments Application Software      
Schedule of Investments [Line Items]      
Total investments at fair value $ 124 $ 856  
Percentage of Net Assets 0.02% 0.16%  
Investment, Identifier [Axis]: Affiliate Investments Equity Investments Coginiti Corp Common Stock      
Schedule of Investments [Line Items]      
Total investments at fair value $ 124 [1] $ 856 [2] 1,174
Investment, Identifier [Axis]: Affiliate Investments Equity Investments Gynesonics, Inc. Series A-1 Preferred Stock      
Schedule of Investments [Line Items]      
Total investments at fair value 4,540 [1] 4,577 [2]  
Investment, Identifier [Axis]: Affiliate Investments Equity Investments Gynesonics, Inc. Series A-2 Preferred Stock      
Schedule of Investments [Line Items]      
Total investments at fair value 21,246 [1] 21,461 [2]  
Investment, Identifier [Axis]: Affiliate Investments Equity investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 25,910 $ 26,894  
Percentage of Net Assets 4.89% 4.92%  
Investment, Identifier [Axis]: Affiliate Investments Equity investments Application Software Coginiti Corp, Investment Type Equity Common Stock Initial Acquisition Date 3/9/2020      
Schedule of Investments [Line Items]      
Total investments at fair value $ 124 $ 856  
Investment, Identifier [Axis]: Affiliate Investments Equity investments Health Care Technology      
Schedule of Investments [Line Items]      
Total investments at fair value $ 25,786 $ 26,038  
Percentage of Net Assets 4.87% 4.76%  
Investment, Identifier [Axis]: Affiliate Investments Equity investments Health Care Technology Gynesonics, Inc. Investment Type Equity Series A-1 Preferred Stock Initial Acquisition Date 10/24/2023      
Schedule of Investments [Line Items]      
Total investments at fair value $ 4,540 $ 4,577  
Investment, Identifier [Axis]: Affiliate Investments Equity investments Health Care Technology Gynesonics, Inc. Investment Type Equity Series A-2 Preferred Stock Initial Acquisition Date 3/1/2023      
Schedule of Investments [Line Items]      
Total investments at fair value 21,246 21,461  
Investment, Identifier [Axis]: Affiliate Investments Warrants      
Schedule of Investments [Line Items]      
Total investments at fair value $ 419 [1] $ 976 [2] 910
Percentage of Net Assets 0.08% 0.18%  
Investment, Identifier [Axis]: Affiliate Investments Warrants Application Software      
Schedule of Investments [Line Items]      
Total investments at fair value $ 95 $ 663  
Percentage of Net Assets 0.02% 0.12%  
Investment, Identifier [Axis]: Affiliate Investments Warrants Application Software Coginiti Corp Investment Type Warrants Common Stock Initial Acquisition Date 3/9/2020 Maturity Date 3/9/2030      
Schedule of Investments [Line Items]      
Total investments at fair value $ 95 $ 663  
Investment, Identifier [Axis]: Affiliate Investments Warrants Coginiti Corp      
Schedule of Investments [Line Items]      
Total investments at fair value 95 [1] 663 [2] 910
Investment, Identifier [Axis]: Affiliate Investments Warrants Gynesonics, Inc.      
Schedule of Investments [Line Items]      
Total investments at fair value 324 [1] 313 [2]  
Investment, Identifier [Axis]: Affiliate Investments Warrants Health Care Technology      
Schedule of Investments [Line Items]      
Total investments at fair value $ 324 $ 313  
Percentage of Net Assets 0.06% 0.06%  
Investment, Identifier [Axis]: Affiliate Investments Warrants Health Care Technology Gynesonics, Inc. Investment Type Warrants Success Fee Initial Acquisition Date 3/1/2023 Maturity Date 3/1/2030      
Schedule of Investments [Line Items]      
Total investments at fair value $ 324 $ 313  
Investment, Identifier [Axis]: Control Investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 950 [1] $ 950 [2] 9,290
Percentage of Net Assets 0.18% 0.17%  
Investment, Identifier [Axis]: Control Investments Debt Investments      
Schedule of Investments [Line Items]      
Total investments at fair value     9,290
Investment, Identifier [Axis]: Control Investments Debt Investments Pivot3, Inc.      
Schedule of Investments [Line Items]      
Total investments at fair value     $ 9,290
Investment, Identifier [Axis]: Control Investments Equity Investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 950 [1] $ 950 [2]  
Percentage of Net Assets 0.18% 0.17%  
Investment, Identifier [Axis]: Control Investments Equity Investments Data Processing & Outsourced Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 950 $ 950  
Percentage of Net Assets 0.18% 0.17%  
Investment, Identifier [Axis]: Control Investments Equity Investments Data Processing & Outsourced Services Pivot3, Inc. Investment Type Equity Equity Interest Initial Acquisition Date 12/31/2023      
Schedule of Investments [Line Items]      
Total investments at fair value $ 950 $ 950  
Investment, Identifier [Axis]: Control Investments Equity Investments Pivot3, Inc.      
Schedule of Investments [Line Items]      
Total investments at fair value 950 [1] 950 [2]  
Investment, Identifier [Axis]: Non- Control/ Non- Affiliate Investments Debt Investments Data Processing & Outsourced Services Interactions Corporation Investment Type Senior Secured Interest Rate S O F R+9.26%, 9.76% floor, 3.4375% E T P Initial Acquisition Date 6/24/2022 Maturity Date 6/15/2027      
Schedule of Investments [Line Items]      
Total investments at fair value 39,806    
Investment, Identifier [Axis]: Non- Control/ Non- Affiliate Investments Debt Investments Data Processing & Outsourced Services Interactions Corporation Investment Type Senior Secured Interest Rate SOFR+9.26%, 9.76% floor, 3.4375% E T P Initial Acquisition Date 6/24/2022 Maturity Date 6/15/2027      
Schedule of Investments [Line Items]      
Total investments at fair value   39,945  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 965,397 $ 972,604  
Percentage of Net Assets 182.34% 177.78%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 945,909 $ 954,912  
Percentage of Net Assets 178.65% 174.54%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Application Software      
Schedule of Investments [Line Items]      
Total investments at fair value $ 170,957 $ 196,540  
Percentage of Net Assets 32.29% 35.92%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Application Software Blueshift Labs, Inc. Investment Type Senior Secured Interest Rate SOFR+6.25%, 11.25% floor, 2.00% PIK, 1.50% ETP Initial Acquisition Date 12/19/2023 Maturity Date 12/15/2028      
Schedule of Investments [Line Items]      
Total investments at fair value $ 24,824 $ 25,083  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Application Software Circadence Corporation Investment Type Senior Secured Interest Rate SOFR+9.50%, 12.26% floor, 10.00% cash cap, 7.50% ETP Initial Acquisition Date 12/20/2018 Maturity Date 03/15/2024      
Schedule of Investments [Line Items]      
Total investments at fair value   19,028  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Application Software Circadence Corporation Investment Type Senior Secured Interest Rate SOFR+9.50%, 12.26% floor, 10.00% cash cap, 7.50% ETP Initial Acquisition Date 12/20/2018 Maturity Date 12/15/2025      
Schedule of Investments [Line Items]      
Total investments at fair value 19,213    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Application Software FiscalNote, Inc. Investment Type Senior Secured Interest Rate PRIME+5.00%, 9.00% floor, 1.00% PIK, 5.75% ETP Initial Acquisition Date 10/19/2020 Maturity Date 7/15/2027      
Schedule of Investments [Line Items]      
Total investments at fair value 38,426 64,615  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Application Software VTX Intermediate Holdings, Inc. (dba VertexOne) Investment Type Senior Secured Interest Rate SOFR+9.00%, 9.50% floor, 10.00% cash cap, 4.50% ETP Initial Acquisition Date 12/28/2021 Maturity Date 12/28/2026      
Schedule of Investments [Line Items]      
Total investments at fair value 88,494 87,814  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Asset Management & Custody Banks      
Schedule of Investments [Line Items]      
Total investments at fair value $ 7,941 $ 7,860  
Percentage of Net Assets 1.50% 1.44%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Asset Management & Custody Banks Betterment Holdings, Inc. Investment Type Senior Secured Interest Rate PRIME+4.50%, 8.50% floor Initial Acquisition Date 10/6/2023 Maturity Date 10/6/2027      
Schedule of Investments [Line Items]      
Total investments at fair value $ 7,941 $ 7,860  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Data Processing & Outsourced Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 104,115 $ 104,581  
Percentage of Net Assets 19.66% 19.12%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Data Processing & Outsourced Services Elevate Services, Inc. Investment Type Senior Secured Interest Rate SOFR+7.50%, 12.78% floor Initial Acquisition Date 7/10/2023 Maturity Date 7/10/2027      
Schedule of Investments [Line Items]      
Total investments at fair value $ 19,706 $ 19,424  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Data Processing & Outsourced Services ShareThis, Inc. Investment Type Senior Secured Interest Rate SOFR+8.25%, 10.86% floor, 3.00% ETP Initial Acquisition Date 8/18/2020 Maturity Date 9/30/2024      
Schedule of Investments [Line Items]      
Total investments at fair value 933 947  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Data Processing & Outsourced Services ShareThis, Inc. Investment Type Senior Secured Interest Rate SOFR+9.25%, 11.86% floor, 3.00% ETP Initial Acquisition Date 12/3/2018 Maturity Date 9/30/2024      
Schedule of Investments [Line Items]      
Total investments at fair value 19,587 19,895  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Data Processing & Outsourced Services Vesta Payment Solutions, Inc. Investment Type Senior Secured Interest Rate SOFR+7.00%, 9.00% floor, 5.00% ETP Initial Acquisition Date 11/29/2022 Maturity Date 11/15/2026      
Schedule of Investments [Line Items]      
Total investments at fair value 24,083    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Education Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 25,798 $ 25,796  
Percentage of Net Assets 4.87% 4.72%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Education Services Turning Tech Intermediate, Inc. (dba Echo 360, Inc.) Investment Type Senior Secured Interest Rate SOFR+8.50%, 9.00% floor, 13.00% cash cap, 3.00% ETP Initial Acquisition Date 6/22/2021 Maturity Date 12/14/2025      
Schedule of Investments [Line Items]      
Total investments at fair value $ 25,798 $ 25,796  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Electronic Equipment & Instruments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 26,753 $ 26,790  
Percentage of Net Assets 5.05% 4.90%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Electronic Equipment & Instruments Brivo, Inc. Investment Type Senior Secured Interest Rate SOFR+6.85%, 10.89% floor, 3.00% ETP Initial Acquisition Date 10/20/2022 Maturity Date 10/20/2027      
Schedule of Investments [Line Items]      
Total investments at fair value $ 26,753 $ 26,790  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Health Care Equipment      
Schedule of Investments [Line Items]      
Total investments at fair value $ 15,412 $ 15,284  
Percentage of Net Assets 2.91% 2.79%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Health Care Equipment Moximed, Inc. Investment Type Senior Secured Interest Rate PRIME+5.25%, 8.75% floor, 3.50% ETP Initial Acquisition Date 6/24/2022 Maturity Date 7/1/2027      
Schedule of Investments [Line Items]      
Total investments at fair value $ 15,412 $ 15,284  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Health Care Technology      
Schedule of Investments [Line Items]      
Total investments at fair value $ 126,066 $ 126,204  
Percentage of Net Assets 23.81% 23.06%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Health Care Technology EBR Systems, Inc. Investment Type Senior Secured Interest Rate PRIME+4.90%, 8.90% floor, 4.50% ETP Initial Acquisition Date 6/30/2022 Maturity Date 6/15/2027      
Schedule of Investments [Line Items]      
Total investments at fair value $ 40,385 $ 40,337  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Health Care Technology Mingle Healthcare Solutions, Inc. Investment Type Senior Secured Interest Rate SOFR+9.75%, 12.26% floor, 10.50% ETP Initial Acquisition Date 8/15/2018 Maturity Date 12/15/2026      
Schedule of Investments [Line Items]      
Total investments at fair value 3,202 3,791  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Health Care Technology Nalu Medical, Inc. Investment Type Senior Secured Interest Rate PRIME+2.70%, 6.70% floor, 2.00% PIK, 4.50% ETP Initial Acquisition Date 10/12/2022 Maturity Date 10/12/2027      
Schedule of Investments [Line Items]      
Total investments at fair value 21,381 21,191  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Health Care Technology Route 92 Medical, Inc. Investment Type Senior Secured Interest Rate SOFR+8.48%, 8.98% floor, 3.95% ETP Initial Acquisition Date 8/17/2021 Maturity Date 7/1/2026      
Schedule of Investments [Line Items]      
Total investments at fair value 35,396 35,435  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Health Care Technology SetPoint Medical Corporation Investment Type Senior Secured Interest Rate SOFR+5.75%, 9.00% floor, 4.00% ETP Initial Acquisition Date 12/29/2022 Maturity Date 12/1/2027      
Schedule of Investments [Line Items]      
Total investments at fair value 25,702 25,450  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Human Resource & Employment Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 111,300 $ 112,006  
Percentage of Net Assets 21.02% 20.47%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Human Resource & Employment Services CloudPay, Inc. Investment Type Senior Secured Interest Rate PRIME+6.25%, 10.25% floor, 2.00% ETP Initial Acquisition Date 9/26/2022 Maturity Date 8/17/2027      
Schedule of Investments [Line Items]      
Total investments at fair value $ 75,761 $ 75,465  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Human Resource & Employment Services Snagajob.com, Inc. Investment Type Senior Secured Interest Rate SOFR+8.50% PIK, 9.00% floor, 2.75% ETP Initial Acquisition Date 9/29/2021 Maturity Date 9/1/2025      
Schedule of Investments [Line Items]      
Total investments at fair value 35,539 36,541  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Internet & Direct Marketing Retail      
Schedule of Investments [Line Items]      
Total investments at fair value $ 53,784    
Percentage of Net Assets 10.16%    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Internet & Direct Marketing Retail Madison Reed, Inc. Investment Type Senior Secured Interest Rate PRIME+4.75%, 11.00% floor, 11.00% cash cap, 3.00% ETP Initial Acquisition Date 12/16/2022 Maturity Date 12/16/2026      
Schedule of Investments [Line Items]      
Total investments at fair value $ 15,934    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Internet & Direct Marketing Retail Marley Spoon SE Investment Type Senior Secured Interest Rate SOFR+7.50%, 8.26% floor, 1.25% PIK Initial Acquisition Date 6/30/2021 Maturity Date 6/15/2026      
Schedule of Investments [Line Items]      
Total investments at fair value 37,850    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Internet Software and Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 114,767 $ 96,820  
Percentage of Net Assets 21.68% 17.70%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Internet Software and Services Bombora, Inc. Investment Type Senior Secured Interest Rate SOFR+4.75%, 6.75% floor, 3.25% PIK, 0.96% ETP Initial Acquisition Date 12/26/2023 Maturity Date 1/15/2028      
Schedule of Investments [Line Items]      
Total investments at fair value $ 28,104    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Internet Software and Services CarNow, Inc. Investment Type Senior Secured Interest Rate SOFR+ 7.25%, 11.75% floor, 1.00% ETP Initial Acquisition Date 3/22/2024 Maturity Date 3/22/2029      
Schedule of Investments [Line Items]      
Total investments at fair value 17,297    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Internet Software and Services Skillshare, Inc. Investment Type Senior Secured Interest Rate SOFR+6.50%, 10.72% floor, 3.00% ETP Initial Acquisition Date 11/8/2022 Maturity Date 11/8/2026      
Schedule of Investments [Line Items]      
Total investments at fair value 29,580    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Internet Software and Services Synack, Inc. Investment Type Senior Secured Interest Rate SOFR+7.00%, 11.07% floor, 1.00% ETP Initial Acquisition Date 12/29/2023 Maturity Date 12/29/2028      
Schedule of Investments [Line Items]      
Total investments at fair value 39,786    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Property & Casualty Insurance      
Schedule of Investments [Line Items]      
Total investments at fair value $ 75,437 $ 74,767  
Percentage of Net Assets 14.25% 13.67%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments Property & Casualty Insurance Kin Insurance, Inc. Investment Type Senior Secured Interest Rate PRIME+6.25%, 12.50% floor, 3.00% ETP Initial Acquisition Date 9/26/2022 Maturity Date 9/15/2026      
Schedule of Investments [Line Items]      
Total investments at fair value $ 75,437    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments System Software      
Schedule of Investments [Line Items]      
Total investments at fair value $ 113,579 $ 112,955  
Percentage of Net Assets 21.45% 20.64%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments System Software 3PL Central LLC Investment Type Senior Secured Interest Rate SOFR+4.50%, 6.50 floor, 2.50% PIK, 2.00% ETP Initial Acquisition Date 11/9/2022 Maturity Date 11/9/2027      
Schedule of Investments [Line Items]      
Total investments at fair value $ 69,633 $ 69,066  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments System Software Dejero Labs Inc. Investment Type Second Lien Interest Rate SOFR+8.00%, 8.50% floor, 2.00% PIK, 3.00% ETP Initial Acquisition Date 12/22/2021 Maturity Date 12/22/2025      
Schedule of Investments [Line Items]      
Total investments at fair value 14,388    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Debt Investments System Software Linxup, LLC Investment Type Senior Secured Interest Rate PRIME+3.25%, 11.75% floor, 2.25% ETP Initial Acquisition Date 11/03/2023 Maturity Date 11/15/2027      
Schedule of Investments [Line Items]      
Total investments at fair value 29,558    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 4,814 $ 5,721  
Percentage of Net Assets 0.91% 1.05%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Advertising      
Schedule of Investments [Line Items]      
Total investments at fair value $ 136 $ 136  
Percentage of Net Assets 0.03% 0.03%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Advertising Minute Media Inc. Investment Type Equity Common Stock Initial Acquisition Date 12/13/2023      
Schedule of Investments [Line Items]      
Total investments at fair value $ 16 $ 16  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Advertising Minute Media Inc. Investment Type Equity Preferred Stock Initial Acquisition Date 12/13/2023      
Schedule of Investments [Line Items]      
Total investments at fair value 120    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Application Software      
Schedule of Investments [Line Items]      
Total investments at fair value $ 434    
Percentage of Net Assets 0.08%    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Application Software Aria Systems, Inc. Investment Type Equity Series G Preferred Stock Initial Acquisition Date 7/10/2018      
Schedule of Investments [Line Items]      
Total investments at fair value $ 127    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Application Software FiscalNote, Inc. Investment Type Equity Common Stock Initial Acquisition Date 10/19/2020      
Schedule of Investments [Line Items]      
Total investments at fair value 307    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Health Care Technology      
Schedule of Investments [Line Items]      
Total investments at fair value $ 2,777    
Percentage of Net Assets 0.52%    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Health Care Technology CareCloud, Inc. Investment Type Equity 11% Series A Cumulative Redeemable Perpetual Preferred Stock Initial Acquisition Date 1/8/2020      
Schedule of Investments [Line Items]      
Total investments at fair value $ 2,777    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Human Resource & Employment Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 1,023 $ 1,357  
Percentage of Net Assets 0.19% 0.25%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Human Resource & Employment Services Snagajob.com, Inc. Investment Type Equity Convertible Note Initial Acquisition Date 10/26/2023 Maturity Date 12/31/2026      
Schedule of Investments [Line Items]      
Total investments at fair value $ 1,023    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Internet & Direct Marketing Retail      
Schedule of Investments [Line Items]      
Total investments at fair value $ 170 $ 125  
Percentage of Net Assets 0.03% 0.02%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Internet & Direct Marketing Retail Marley Spoon SE Investment Type Equity Common Stock Initial Acquisition Date 7/7/2023      
Schedule of Investments [Line Items]      
Total investments at fair value $ 170 $ 125  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Technology Hardware, Storage & Peripherals      
Schedule of Investments [Line Items]      
Total investments at fair value $ 274 $ 160  
Percentage of Net Assets 0.06% 0.03%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Equity Investments Technology Hardware, Storage & Peripherals Quantum Corporation Investment Type Equity Common Stock Initial Acquisition Date 8/13/2021      
Schedule of Investments [Line Items]      
Total investments at fair value $ 274 $ 160  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Preferred Stocks Application Software      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 390  
Percentage of Net Assets   0.07%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Preferred Stocks Application Software Aria Systems, Inc. Series G Preferred Stock Initial Acquisition Date 7/10/2018      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 127  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Preferred Stocks Health Care Technology      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 3,553  
Percentage of Net Assets   0.65%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Preferred Stocks Health Care Technology CareCloud, Inc. 11% Series A Cumulative Redeemable Perpetual Initial Acquisition Date 1/8/2020      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 3,553  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Second Lien Term Loans System Software Dejero Labs Inc. Interest Rate SOFR+5.00%, 5.50 floor, 5.00% PIK, 3.00% ETP Initial Acquisition Date 12/22/2021 Maturity Date 12/22/2025      
Schedule of Investments [Line Items]      
Total investments at fair value   233  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Data Processing & Outsourced Services Vesta Payment Solutions, Inc. Interest Rate SOFR+7.00%, 9.00% floor, 3.00% ETP Initial Acquisition Date 11/29/2022 Maturity Date 11/15/2026      
Schedule of Investments [Line Items]      
Total investments at fair value   24,370  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Health Care Equipment Moximed, Inc. Interest Rate PRIME+5.25%, 8.75% floor, 3.50% ETP Initial Acquisition Date 6/24/2022 Maturity Date 7/1/2027      
Schedule of Investments [Line Items]      
Total investments at fair value   27,879  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Health Care Equipment Revelle Aesthetics, Inc. Interest Rate PRIME+5.50%, 8.75% floor, 4.00% ETP Initial Acquisition Date 3/30/2022 Maturity Date 4/1/2027      
Schedule of Investments [Line Items]      
Total investments at fair value   14,399  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Health Care Technology EBR Systems, Inc. Interest Rate PRIME+4.90%, 8.90% floor, 4.50% ETP Initial Acquisition Date 6/30/2022 Maturity Date 6/15/2027      
Schedule of Investments [Line Items]      
Total investments at fair value   74,767  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Health Care Technology Gynesonics, Inc. Interest Rate SOFR+8.75%, 9.25% floor, 3.50% ETP Initial Acquisition Date 12/1/2020 Maturity Date 12/1/2025      
Schedule of Investments [Line Items]      
Total investments at fair value   39,758  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Health Care Technology Mingle Healthcare Solutions, Inc. Interest Rate SOFR+9.50%, 12.01% floor, .25% PIK, 10.50% ETP Initial Acquisition Date 8/15/2018 Maturity Date 12/15/2023      
Schedule of Investments [Line Items]      
Total investments at fair value   29,490  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Health Care Technology SetPoint Medical Corporation Interest Rate SOFR+5.75%, 9.00% floor, 4.00% ETP Initial Acquisition Date 12/29/2022 Maturity Date 12/1/2027      
Schedule of Investments [Line Items]      
Total investments at fair value   29,183  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Internet & Direct Marketing Retail      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 55,309  
Percentage of Net Assets   10.11%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Internet & Direct Marketing Retail Madison Reed, Inc. Interest Rate PRIME+4.75%, 11.00% floor, 3.00% ETP Initial Acquisition Date 12/16/2022 Maturity Date 12/16/2026      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 10,847  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Internet & Direct Marketing Retail Marley Spoon AG Interest Rate SOFR+8.50%, 1.25% PIK, 9.26% floor Initial Acquisition Date 6/30/2021 Maturity Date 6/15/2025      
Schedule of Investments [Line Items]      
Total investments at fair value   44,462  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Internet Software and Services Bombora, Inc. Interest Rate SOFR+5.00%, 5.76% floor, 3.75% PIK, 2.00% ETP Initial Acquisition Date 3/31/2021 Maturity Date 3/31/2025      
Schedule of Investments [Line Items]      
Total investments at fair value   146  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Internet Software and Services Fidelis Cybersecurity, Inc. Interest Rate SOFR+11.00%, 12.00% floor, 2.39% ETP Initial Acquisition Date 5/13/2021 Maturity Date 5/13/2024      
Schedule of Investments [Line Items]      
Total investments at fair value   263  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Internet Software and Services Skillshare, Inc. Interest Rate SOFR+6.50%, 10.72% floor, 3.00% ETP Initial Acquisition Date 11/8/2022 Maturity Date 11/8/2026      
Schedule of Investments [Line Items]      
Total investments at fair value   16  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Internet Software and Services Synack, Inc. Interest Rate PRIME+4.25%, 8.25% floor Initial Acquisition Date 6/30/2022 Maturity Date 6/30/2027      
Schedule of Investments [Line Items]      
Total investments at fair value   1,357  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans Property & Casualty Insurance Kin Insurance, Inc. Interest Rate PRIME+6.25%, 12.50% floor, 3.00% ETP Initial Acquisition Date 9/26/2022 Maturity Date 9/15/2026      
Schedule of Investments [Line Items]      
Total investments at fair value   120  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Senior Secured Term Loans System Software      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 2,196  
Percentage of Net Assets   0.40%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants      
Schedule of Investments [Line Items]      
Total investments at fair value $ 14,674 $ 11,971  
Percentage of Net Assets 2.78% 2.19%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Advertising STN Video Inc. Class B Non-Voting Stock Initial Acquisition Date 6/30/2017 Maturity Date 6/30/2027      
Schedule of Investments [Line Items]      
Total investments at fair value $ 471    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software      
Schedule of Investments [Line Items]      
Total investments at fair value $ 2,432    
Percentage of Net Assets 0.46%    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software Aria Systems, Inc. Investment Type Warrants Series G Preferred Stock Initial Acquisition Date 6/29/2018 Maturity Date 6/29/2028      
Schedule of Investments [Line Items]      
Total investments at fair value $ 1,049 $ 1,048  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software Blueshift Labs, Inc. Investment Type Warrants Success fee Initial Acquisition Date 12/19/2023      
Schedule of Investments [Line Items]      
Total investments at fair value 168 167  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software Circadence Corporation Investment Type Warrants Series A-6 Preferred Stock Initial Acquisition Date 10/31/2019 Maturity Date 10/31/2029      
Schedule of Investments [Line Items]      
Total investments at fair value 8 12  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software Circadence Corporation Investment Type Warrants Series A-6 Preferred Stock Initial Acquisition Date 12/20/2018 Maturity Date 12/20/2028      
Schedule of Investments [Line Items]      
Total investments at fair value 31 48  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software Circadence Corporation Investment Type Warrants Success Fee Stock Initial Acquisition Date 12/21/2023      
Schedule of Investments [Line Items]      
Total investments at fair value   283  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software Circadence Corporation Investment Type Warrants Success fee Initial Acquisition Date 12/21/2023      
Schedule of Investments [Line Items]      
Total investments at fair value 290    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software Dtex Systems, Inc. Investment Type Warrants Series C-Prime Preferred Stock Initial Acquisition Date 6/1/2018 Maturity Date 6/1/2025      
Schedule of Investments [Line Items]      
Total investments at fair value 325    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software Dtex Systems, Inc.Investment Type Warrants Series C-Prime Preferred Stock Initial Acquisition Date 7/11/2019 Maturity Date 7/11/2026      
Schedule of Investments [Line Items]      
Total investments at fair value 541 389  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Application Software FiscalNote, Inc. Investment Type Warrants Earnout Initial Acquisition Date 7/29/2022 Maturity Date 7/29/2027      
Schedule of Investments [Line Items]      
Total investments at fair value 20    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Asset Management & Custody Banks      
Schedule of Investments [Line Items]      
Total investments at fair value $ 144 $ 161  
Percentage of Net Assets 0.03% 0.03%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Asset Management & Custody Banks Betterment Holdings, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 10/6/2023 Maturity Date 10/6/2033      
Schedule of Investments [Line Items]      
Total investments at fair value $ 134    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Asset Management & Custody Banks Betterment Holdings, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 10/6/2023 Maturity Date 10/6/2033 one      
Schedule of Investments [Line Items]      
Total investments at fair value 10 $ 15  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Biotechnology      
Schedule of Investments [Line Items]      
Total investments at fair value $ 68 $ 51  
Percentage of Net Assets 0.01% 0.01%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Biotechnology Mustang Bio, Inc. Common Stock Initial Acquisition Date 3/4/2022 Maturity Date 3/4/2032      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 39  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Biotechnology Mustang Bio, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 3/4/2022 Maturity Date 3/4/2032Non-Control/Non-Affiliate Investments Warrants Biotechnology Mustang Bio, Inc. Common Stock Initial Acquisition Date 3/4/2022 Maturity Date 3/4/2032      
Schedule of Investments [Line Items]      
Total investments at fair value $ 28    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Biotechnology TRACON Pharmaceuticals, Inc. Common Stock Initial Acquisition Date 9/2/2022 Maturity Date 9/2/2032      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 12  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Biotechnology TRACON Pharmaceuticals, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 9/2/2022 Maturity Date 9/2/2032      
Schedule of Investments [Line Items]      
Total investments at fair value $ 40    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Computer & Electronics Retail      
Schedule of Investments [Line Items]      
Percentage of Net Assets 0.00% 0.00%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Data Processing & Outsourced Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 867 $ 1,254  
Percentage of Net Assets 0.16% 0.23%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Data Processing & Outsourced Services Elevate Services, Inc. Investment Type Warrants Series C Preferred Stock Initial Acquisition Date 7/10/2023 Maturity Date 7/10/2033      
Schedule of Investments [Line Items]      
Total investments at fair value $ 379 $ 384  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Data Processing & Outsourced Services Interactions Corporation Investment Type Warrants Common Stock Initial Acquisition Date 6/24/2022 Maturity Date 6/24/2032      
Schedule of Investments [Line Items]      
Total investments at fair value 17 67  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Data Processing & Outsourced Services ShareThis, Inc. Investment Type Warrants Series D-3 Preferred Stock Initial Acquisition Date 12/3/2018 Maturity Date 12/3/2028      
Schedule of Investments [Line Items]      
Total investments at fair value   803  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Electronic Equipment & Instruments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 686 $ 745  
Percentage of Net Assets 0.13% 0.14%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Electronic Equipment & Instruments Brivo, Inc. Investment Type Warrants Series A-2 Preferred Stock Initial Acquisition Date 10/20/2022 Maturity Date 10/20/2032      
Schedule of Investments [Line Items]      
Total investments at fair value $ 267 $ 322  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Electronic Equipment & Instruments Epic IO Technologies, Inc. Investment Type Warrants Success fee Initial Acquisition Date 12/17/2021 Maturity Date 12/17/2028      
Schedule of Investments [Line Items]      
Total investments at fair value 419 423  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Equipment      
Schedule of Investments [Line Items]      
Total investments at fair value $ 175 $ 240  
Percentage of Net Assets 0.03% 0.04%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Equipment Moximed, Inc. Investment Type Warrants Series C Preferred Stock Initial Acquisition Date 6/24/2022 Maturity Date 6/24/2032      
Schedule of Investments [Line Items]      
Total investments at fair value $ 143 $ 138  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Equipment Revelle Aesthetics, Inc. Investment Type Warrants Series A-2 Preferred Stock Initial Acquisition Date 3/30/2022 Maturity Date 3/30/2032      
Schedule of Investments [Line Items]      
Total investments at fair value 32 102  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Technology      
Schedule of Investments [Line Items]      
Total investments at fair value $ 2,591 $ 2,506  
Percentage of Net Assets 0.49% 0.46%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Technology Allurion Technologies, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 3/30/2021 Maturity Date 1/22/2025      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 15  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Technology Allurion Technologies, Inc. Investment Type Warrants Earnout Initial Acquisition Date 8/2/2023 Maturity Date 8/1/2028      
Schedule of Investments [Line Items]      
Total investments at fair value $ 11 77  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Technology EBR Systems, Inc. Investment Type Warrants Success fee Initial Acquisition Date 6/30/2022 Maturity Date 6/30/2032      
Schedule of Investments [Line Items]      
Total investments at fair value 707 690  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Technology Nalu Medical, Inc. Investment Type Warrants Series D-2 Preferred Stock Initial Acquisition Date 10/12/2022 Maturity Date 10/12/2032      
Schedule of Investments [Line Items]      
Total investments at fair value 100 99  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Technology Route 92 Medical, Inc. Investment Type Warrants Success Fee Initial Acquisition Date 8/17/2021 Maturity Date 8/17/2031      
Schedule of Investments [Line Items]      
Total investments at fair value 855 897  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Technology SetPoint Medical Corporation Investment Type Warrants Series B Preferred Stock Initial Acquisition Date 12/29/2022 Maturity Date 12/29/2032      
Schedule of Investments [Line Items]      
Total investments at fair value 318 199  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Technology SetPoint Medical Corporation Investment Type Warrants Series B Preferred Stock Initial Acquisition Date 6/29/2021 Maturity Date 6/29/2031      
Schedule of Investments [Line Items]      
Total investments at fair value 212 133  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Health Care Technology VERO Biotech LLC Investment Type Warrants Success Fee Initial Acquisition Date 12/29/2020 Maturity Date 12/29/2025      
Schedule of Investments [Line Items]      
Total investments at fair value 388 396  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Human Resource & Employment Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 1,468 $ 1,239  
Percentage of Net Assets 0.28% 0.23%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Human Resource & Employment Services CloudPay, Inc. Investment Type Warrants Series B Preferred Stock Initial Acquisition Date 6/30/2020 Maturity Date 6/30/2030      
Schedule of Investments [Line Items]      
Total investments at fair value $ 1,160 $ 1,001  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Human Resource & Employment Services CloudPay, Inc. Investment Type Warrants Series D Preferred Stock Initial Acquisition Date 8/17/2021 Maturity Date 8/17/2031      
Schedule of Investments [Line Items]      
Total investments at fair value 123 95  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Human Resource & Employment Services CloudPay, Inc. Investment Type Warrants Series D Preferred Stock Initial Acquisition Date 9/26/2022 Maturity Date 9/26/2032      
Schedule of Investments [Line Items]      
Total investments at fair value 185 143  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet & Direct Marketing Retail      
Schedule of Investments [Line Items]      
Total investments at fair value $ 214 $ 154  
Percentage of Net Assets 0.04% 0.03%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet & Direct Marketing Retail Madison Reed, Inc. Investment Type Warrants Success fee Initial Acquisition Date 12/16/2022      
Schedule of Investments [Line Items]      
Total investments at fair value $ 214 $ 154  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet Software and Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 4,160 $ 1,642  
Percentage of Net Assets 0.79% 0.30%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet Software and Services Bombora, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 12/26/2023 Maturity Date 12/26/2033      
Schedule of Investments [Line Items]      
Total investments at fair value $ 46 $ 41  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet Software and Services Bombora, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 3/31/2021 Maturity Date 3/31/2031      
Schedule of Investments [Line Items]      
Total investments at fair value 114 104  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet Software and Services CarNow, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 3/22/2024 Maturity Date 3/22/2034      
Schedule of Investments [Line Items]      
Total investments at fair value 2,400    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet Software and Services INRIX, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 7/26/2019 Maturity Date 7/26/2029      
Schedule of Investments [Line Items]      
Total investments at fair value 684 735  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet Software and Services Longtail Ad Solutions, Inc. (dba JW Player) Investment Type Warrants Common Stock Initial Acquisition Date 12/12/2019 Maturity Date 12/12/2029      
Schedule of Investments [Line Items]      
Total investments at fair value 320    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet Software and Services Skillshare, Inc. Investment Type Warrants Success Fee Initial Acquisition Date 11/8/2022      
Schedule of Investments [Line Items]      
Total investments at fair value 422    
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet Software and Services Skillshare, Inc. Investment Type Warrants Success Fee Initial Acquisition Date 11/8/2022 Maturity Date 11/8/2026      
Schedule of Investments [Line Items]      
Total investments at fair value   294  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Internet Software and Services Synack, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 12/29/2023 Maturity Date 6/30/2032      
Schedule of Investments [Line Items]      
Total investments at fair value 174 147  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Property & Casualty Insurance      
Schedule of Investments [Line Items]      
Total investments at fair value $ 578 $ 438  
Percentage of Net Assets 0.11% 0.08%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Property & Casualty Insurance Kin Insurance, Inc. Investment Type Warrants Series D-3 Preferred Stock Initial Acquisition Date 5/5/2023 Maturity Date 9/26/2032      
Schedule of Investments [Line Items]      
Total investments at fair value $ 107 $ 81  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Property & Casualty Insurance Kin Insurance, Inc. Investment Type Warrants Series D-3 Preferred Stock Initial Acquisition Date 8/25/2023 Maturity Date 9/26/2032      
Schedule of Investments [Line Items]      
Total investments at fair value 86 65  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Property & Casualty Insurance Kin Insurance, Inc. Investment Type Warrants Series D-3 Preferred Stock Initial Acquisition Date 9/26/2022 Maturity Date 9/26/2032      
Schedule of Investments [Line Items]      
Total investments at fair value 385 292  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Specialized Consumer Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 365 $ 373  
Percentage of Net Assets 0.07% 0.07%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Specialized Consumer Services Credit Sesame, Inc. Investment Type Warrants Common Stock Initial Acquisition Date 1/7/2020 Maturity Date 1/7/2030      
Schedule of Investments [Line Items]      
Total investments at fair value $ 365 $ 373  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants System Software      
Schedule of Investments [Line Items]      
Total investments at fair value $ 563 $ 562  
Percentage of Net Assets 0.11% 0.10%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants System Software Dejero Labs Inc. Investment Type Warrants Common Stock Initial Acquisition Date 5/31/2019 Maturity Date 5/31/2029      
Schedule of Investments [Line Items]      
Total investments at fair value $ 234 $ 268  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants System Software Linxup, LLC Investment Type Warrants Success Fee Initial Acquisition Date 11/3/2023 Maturity Date 11/3/2033      
Schedule of Investments [Line Items]      
Total investments at fair value 329 294  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Technology Hardware, Storage & Peripherals      
Schedule of Investments [Line Items]      
Total investments at fair value $ 363 $ 410  
Percentage of Net Assets 0.07% 0.07%  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Technology Hardware, Storage & Peripherals RealWear, Inc. Investment Type Warrants Series A Preferred Stock Initial Acquisition Date 10/5/2018 Maturity Date 10/5/2028      
Schedule of Investments [Line Items]      
Total investments at fair value $ 158 $ 178  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Technology Hardware, Storage & Peripherals RealWear, Inc. Investment Type Warrants Series A Preferred Stock Initial Acquisition Date 12/28/2018 Maturity Date 12/28/2028      
Schedule of Investments [Line Items]      
Total investments at fair value 31 36  
Investment, Identifier [Axis]: Non-Control/Non-Affiliate Investments Warrants Technology Hardware, Storage & Peripherals RealWear, Inc. Investment Type Warrants Series A Preferred Stock Initial Acquisition Date 6/27/2019 Maturity Date 6/27/2029      
Schedule of Investments [Line Items]      
Total investments at fair value 174 196  
Investment, Identifier [Axis]: Total Investments, Excluding U.S. Treasury Bills      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 1,025,010  
Percentage of Net Assets   187.36%  
Investment, Identifier [Axis]: Total U.S. Treasury      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 41,999  
Percentage of Net Assets   7.68%  
Investment, Identifier [Axis]: U.S. Treasury U.S. Treasury Bill, 4.324% Initial Acquisition Date 12/29/2023 Maturity Date 1/4/2024      
Schedule of Investments [Line Items]      
Total investments at fair value   $ 41,999  
Percentage of Net Assets   4.324%  
Western United States      
Schedule of Investments [Line Items]      
Total investments at fair value $ 408,853 $ 404,541  
Percentage of Net Assets 77.22% 73.94%  
Northeastern United States      
Schedule of Investments [Line Items]      
Total investments at fair value $ 211,643 $ 239,444  
Percentage of Net Assets 39.97% 43.77%  
Midwestern United States      
Schedule of Investments [Line Items]      
Total investments at fair value $ 131,701 $ 130,784  
Percentage of Net Assets 24.87% 23.91%  
South Central United States      
Schedule of Investments [Line Items]      
Total investments at fair value $ 88,494 $ 87,814  
Percentage of Net Assets 16.72% 16.05%  
Northwestern United States      
Schedule of Investments [Line Items]      
Total investments at fair value $ 25,131 $ 25,514  
Percentage of Net Assets 4.75% 4.66%  
Southeastern United States      
Schedule of Investments [Line Items]      
Total investments at fair value $ 20,504 $ 820  
Percentage of Net Assets 3.88% 0.15%  
United States      
Schedule of Investments [Line Items]      
Total investments at fair value $ 886,326 $ 888,917  
Percentage of Net Assets 167.41% 162.48%  
United Kingdom      
Schedule of Investments [Line Items]      
Total investments at fair value $ 77,364 $ 76,839  
Percentage of Net Assets 14.61% 14.05%  
Germany      
Schedule of Investments [Line Items]      
Total investments at fair value $ 38,020 $ 44,587  
Percentage of Net Assets 7.18% 8.15%  
Canada      
Schedule of Investments [Line Items]      
Total investments at fair value $ 14,622 $ 14,667  
Percentage of Net Assets 2.76% 2.68%  
Health Care Technology      
Schedule of Investments [Line Items]      
Total investments at fair value $ 181,200 $ 182,200  
Percentage of Net Assets 34.22% 33.30%  
Application Software      
Schedule of Investments [Line Items]      
Total investments at fair value $ 174,042 $ 200,645  
Percentage of Net Assets 32.87% 36.67%  
Data Processing & Outsourced Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 105,932 $ 106,785  
Percentage of Net Assets 20.00% 19.52%  
Human Resource & Employment Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 113,791 $ 114,602  
Percentage of Net Assets 21.49% 20.95%  
Internet Software and Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 118,927 $ 98,462  
Percentage of Net Assets 22.47% 18.00%  
System Software      
Schedule of Investments [Line Items]      
Total investments at fair value $ 114,142 $ 113,517  
Percentage of Net Assets 21.56% 20.74%  
Property & Casualty Insurance      
Schedule of Investments [Line Items]      
Total investments at fair value $ 76,015 $ 75,205  
Percentage of Net Assets 14.36% 13.75%  
Internet & Direct Marketing Retail      
Schedule of Investments [Line Items]      
Total investments at fair value $ 54,168 $ 55,588  
Percentage of Net Assets 10.23% 10.16%  
Electronic Equipment & Instruments      
Schedule of Investments [Line Items]      
Total investments at fair value $ 27,439 $ 27,535  
Percentage of Net Assets 5.18% 5.04%  
Education Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 25,798 $ 25,796  
Percentage of Net Assets 4.87% 4.72%  
Health Care Equipment      
Schedule of Investments [Line Items]      
Total investments at fair value $ 15,587 $ 15,524  
Percentage of Net Assets 2.94% 2.83%  
Asset Management & Custody Banks      
Schedule of Investments [Line Items]      
Total investments at fair value $ 8,085 $ 8,021  
Percentage of Net Assets 1.53% 1.47%  
Technology Hardware, Storage & Peripherals      
Schedule of Investments [Line Items]      
Total investments at fair value $ 637 $ 570  
Percentage of Net Assets 0.13% 0.10%  
Specialized Consumer Services      
Schedule of Investments [Line Items]      
Total investments at fair value $ 365 $ 373  
Percentage of Net Assets 0.07% 0.07%  
Advertising      
Schedule of Investments [Line Items]      
Total investments at fair value $ 136 $ 136  
Percentage of Net Assets 0.03% 0.03%  
Biotechnology      
Schedule of Investments [Line Items]      
Total investments at fair value $ 68 $ 51  
Percentage of Net Assets 0.01% 0.01%  
[1] All investments in the portfolio companies, which as of March 31, 2024, represented 9.62% of the Company’s net assets, may be deemed to be restricted securities under the Securities Act, and were valued at fair value as determined in good faith by the Company’s Board of Directors.
[2] All investments in the portfolio company, which as of December 31, 2023, represented 9.58% of the Company’s net assets, may be deemed to be restricted securities under the Securities Act, and were valued at fair value as determined in good faith by the Company’s Board of Directors.