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Note C - Marketable Securities - Net Gains and Losses on Marketable Securities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Net gains recognized during the period on marketable securities	$ 34,359	$ 26,989
Less: Net losses realized on marketable securities sold during the period	1,507	0
Net unrealized gains recognized during the reporting period on marketable securities still held at the reporting date	$ 35,866	$ 26,989

Amount of realized gain (loss) on investment in debt and equity securities.

Amount of unrealized gain (loss) on investment in debt and equity securities.