Note 3 - Investments - Realized Gains and Losses Related to the Sale of Securities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Gross gains	$ 43,935	$ 530
Gross losses	(258,370)	(5,029)
Net security losses	$ (214,435)	$ (4,499)