Note 4 - Property and Equipment, Net - Composition of Property and Equipment (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Property and Equipment	$ 3,277,000	$ 3,277,000
Less accumulated depreciation and amortization	(1,432,000)	(1,356,000)
Property and equipment, net	1,845,014	1,920,823
Land [Member]
Property and Equipment	1,185,000	1,185,000
Building and Building Improvements [Member]
Property and Equipment	1,827,000	1,827,000
Computer Equipment [Member]
Property and Equipment	45,000	45,000
Office Furniture and Equipment [Member]
Property and Equipment	$ 220,000	$ 220,000