Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Cash Flows from Operating Activities
Net change in net assets resulting from operations	$ (10,651,183)	$ (22,065,346)	$ (15,620,024)	$ 4,616,509	$ (32,716,529)	$ (11,003,515)
Adjustments to reconcile net change in net assets resulting from operations to net cash provided by/(used in) operating activities:
Net realized loss on investments					453,686	13,080,856
Net change in unrealized (appreciation)/depreciation of investments	6,965,946	18,418,370	(1,455,515)	(8,648,931)	25,384,316	(10,104,446)
Amortization of discount on 6.00% Notes due 2026					212,187	142,894
Stock-based compensation					1,071,074	1,175,537
Adjustments to escrow proceeds receivable					(139,925)	211,918
Accrued interest on U.S. Treasury bills					18,150	(385,692)
Purchases of investments in:
Portfolio investments					(35,073,044)	(12,514,713)
U.S. Treasury bills						(141,793,045)
Proceeds from sales or maturity of investments in:
Portfolio investments					10,551,335	6,257,861
U.S. Treasury bills					63,792,704	151,313,976
Change in operating assets and liabilities:
Prepaid expenses and other assets					212,047	241,835
Interest and dividends receivable					48,763	19,218
Proceeds receivable						(664,470)
Escrow proceeds receivable					238,249	252,367
Accounts payable and accrued expenses					1,656,231	1,802,373
Net Cash Provided by/(Used in) Operating Activities					35,709,244	(1,967,046)
Cash Flows from Financing Activities
Repurchases of common stock					(9,400,000)	(13,500,000)
Cash dividends paid					(107,823)	(107,823)
Net Cash Used in Financing Activities					(9,507,823)	(13,607,823)
Total Increase/(Decrease) in Cash Balance					26,201,421	(15,574,869)
Cash Balance at Beginning of Year		$ 28,178,352		$ 40,117,598	28,178,352	40,117,598	$ 40,117,598
Cash Balance at End of Period	$ 54,379,773		$ 24,542,729		54,379,773	24,542,729	$ 28,178,352
Supplemental Information:
Interest paid					2,250,000	2,250,000
Taxes paid					$ 54,894	$ 530,556