Note 6 - Fair Value (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)	$ 116,619	$ 9,611,866
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net change in unrealized appreciation (depreciation) on investments net of deferred taxes	Net change in unrealized appreciation (depreciation) on investments net of deferred taxes