CONSOLIDATED SCHEDULE OF INVESTMENTS - Acquisition Dates of Restricted Securities	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Investment, Identifier [Axis]: 1244311 B.C. Ltd. | Common Equity - Common Stock
Acquisition Date	Sep. 30, 2020	Sep. 30, 2020
Investment, Identifier [Axis]: AIC SPV Holdings II, LLC | Preferred Equity - Preferred Stock
Acquisition Date		Jun. 01, 2017
Investment, Identifier [Axis]: BSP-TS, LP | Preferred Equity - Preferred Equity
Acquisition Date	Oct. 23, 2023
Investment, Identifier [Axis]: Carbon6 Technologies, Inc. | Preferred Equity - Preferred Equity
Acquisition Date		Aug. 22, 2022
Investment, Identifier [Axis]: Carbonfree Chemicals Holdings LLC | Common Equity - Common Equity / Interest
Acquisition Date	Nov. 01, 2019	Nov. 19, 2019
Investment, Identifier [Axis]: ChyronHego Corporation | Preferred Equity - Preferred Equity
Acquisition Date	Dec. 29, 2020	Dec. 29, 2020
Investment, Identifier [Axis]: FC2 LLC | Common Equity - Common Stock
Acquisition Date	Oct. 14, 2022	Oct. 14, 2022
Investment, Identifier [Axis]: GS SEER Group Holdings, LLC | Common Equity - Common Stock
Acquisition Date	Apr. 28, 2023
Investment, Identifier [Axis]: Greylock Holdings LLC | Common Equity - Common Stock
Acquisition Date	Mar. 16, 2023
Investment, Identifier [Axis]: HSI Halo Holdings, LLC | Common Equity - Common Stock
Acquisition Date		Nov. 09, 2022
Investment, Identifier [Axis]: Litify Holdings Inc. | Common Equity - Common Stock
Acquisition Date	Feb. 03, 2023
Investment, Identifier [Axis]: MSEA Tankers LLC | Common Equity - Class A Units
Acquisition Date	Dec. 12, 2014	Dec. 12, 2014
Investment, Identifier [Axis]: Maxor Topco, L.P. | Preferred Equity - Preferred Equity
Acquisition Date	Mar. 01, 2023
Investment, Identifier [Axis]: Merx Aviation Finance, LLC | Common Equity - Membership Interests
Acquisition Date	Sep. 01, 2022	May 22, 2013
Investment, Identifier [Axis]: Nutpods Holdings, Inc. | Common Equity - Common Stock
Acquisition Date	Dec. 26, 2023
Investment, Identifier [Axis]: Owl Parent Holdings, LLC | Common Equity - Common Stock
Acquisition Date		Feb. 04, 2022
Investment, Identifier [Axis]: Pelican Energy, LLC | Common Equity - Membership Interests
Acquisition Date	Mar. 28, 2012	Mar. 28, 2012
Investment, Identifier [Axis]: Project Comfort Buyer, Inc. | Preferred Equity - Preferred Equity
Acquisition Date		May 16, 2022
Investment, Identifier [Axis]: Renew Financial LLC (f/k/a Renewable Funding, LLC) | Common Equity - Common Stock
Acquisition Date		Dec. 23, 2020
Investment, Identifier [Axis]: Renew Financial LLC (f/k/a Renewable Funding, LLC) | Preferred Equity - Preferred Equity
Acquisition Date		Jul. 12, 2022
Investment, Identifier [Axis]: Renew Financial LLC (f/k/a Renewable Funding, LLC) | Preferred Equity | Preferred Equity - Series B Preferred Stock
Acquisition Date		Apr. 09, 2014
Investment, Identifier [Axis]: Renew Financial LLC (f/k/a Renewable Funding, LLC) | Preferred Equity | Preferred Equity - Series D Preferred Stock
Acquisition Date		Oct. 01, 2015
Investment, Identifier [Axis]: Renew JV LLC | Common Equity - Membership Interests
Acquisition Date		Mar. 20, 2017
Investment, Identifier [Axis]: SHD Oil & Gas, LLC | Common Equity - Series A Units
Acquisition Date	Nov. 18, 2016	Nov. 18, 2016
Investment, Identifier [Axis]: SHD Oil & Gas, LLC | Common Equity - Series C Units
Acquisition Date	Dec. 27, 2012	Dec. 27, 2012
Investment, Identifier [Axis]: SMC IR Holdings, LLC | Common Equity - Common Stock
Acquisition Date		Mar. 08, 2022
Investment, Identifier [Axis]: Silk Holdings I Corp. | Common Equity - Common Stock
Acquisition Date	May 01, 2023
Investment, Identifier [Axis]: Trench Safety Solutions Holdings, LLC | Common Equity - Series A-1 Units
Acquisition Date		Apr. 29, 2022
Investment, Identifier [Axis]: Wm. Bolthouse Farms, Inc. | Common Equity - Equity Interests
Acquisition Date		Jul. 28, 2022