CONSOLIDATED SCHEDULE OF INVESTMENTS (Geographic Composition of Portfolio At Fair Value) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Investments at Fair Value	$ 301,084	$ 412,144	[1]
Percentage of Net Assets	355.01%	552.80%
United States
Schedule of Investments [Line Items]
Investments at Fair Value	$ 290,222	$ 393,848
Percentage of Net Assets	342.21%	528.26%
Canada
Schedule of Investments [Line Items]
Investments at Fair Value	$ 7,278	$ 4,119
Percentage of Net Assets	8.58%	5.52%
Europe
Schedule of Investments [Line Items]
Investments at Fair Value	$ 3,580
Percentage of Net Assets	4.22%
Asia/Oceania
Schedule of Investments [Line Items]
Investments at Fair Value	$ 4
Percentage of Net Assets	0.00%
United Kingdom
Schedule of Investments [Line Items]
Investments at Fair Value		$ 14,177
Percentage of Net Assets		19.02%

[1] As of period end, the aggregate gross unrealized appreciation for all securities in which there was an excess of value over tax cost was $49,821; the aggregate gross unrealized depreciation for all securities in which there was an excess of tax cost over value was $162,667; the net unrealized depreciation was $(112,846); the aggregate cost of securities for Federal income tax purposes was $524,990.