Note 4 - Merger and Business Combination with CrossingBridge Advisors, LLC and Enterprise Diversified, Inc. - Pro Forma Information (Details) - Merger Agreement [Member]	3 Months Ended
	Mar. 31, 2022 USD ($) $ / shares
Revenue	$ 1,964,099
Net income	$ 1,362,088
Net income per share (in dollars per share) | $ / shares	$ 0.25