SCHEDULE OF INVESTMENTS - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Total Control Investments: Majority-owned, Fair Value	$ 41,750	$ 40,853
Total Control Investments: Majority-owned, Cost of Investment	18,611	16,364
Cost of Investment	71,591	61,319
Fair Value	94,720	85,808
Temporary Cash Investments [Member]
Cost of Investment	52,970	44,955
Fair Value	$ 52,970	$ 44,955
Investment Owned, Net Assets, Percentage	55.90%	52.40%
Temporary Cash Investments [Member] | US Treasury Bill [Member]
Date of Initial Investment	March 2024	December 2023
Cost of Investment	$ 52,970	$ 44,955
Fair Value	$ 52,970	$ 44,955
Investment	0.00%	0.00%
Principal	$ 52,970	$ 44,955
Control Investments [Member]
Cost of Investment	10,500	8,253
Fair Value	$ 31,750	$ 30,853
Investment Owned, Net Assets, Percentage	44.10%	47.60%
Control Investments [Member] | Senior Secured Promissory Note [Member]
Cost of Investment	$ 10,500	$ 8,253
Fair Value	$ 10,500	$ 8,253
Investment	12.00%	12.00%
Principal	$ 10,500	$ 8,253
Control Investments [Member] | Equus Energy, LLC (3) Houston, TX [Member]
Date of Initial Investment	December 2011	December 2011
Cost of Investment	$ 8,111	$ 8,111
Fair Value	$ 10,000	$ 10,000
Investment	100.00%	100.00%
Control Investments [Member] | Morgan E&P, LLC (4) Houston, TX [Member]
Date of Initial Investment	April 2023	April 2023
Cost of Investment	$ 0	$ 0
Fair Value	$ 21,250	$ 22,600
Investment	100.00%	100.00%