Note 9 - Income Taxes - Summary of Deferred Tax Assets (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Net operating loss carryforwards	$ 4,686,000	$ 5,024,000
Depreciation and amortization	1,137,000	1,159,000
Non-cash compensation	1,649,000	(117,000)
Other	124,000	69,000
Total	7,596,000	6,135,000
Valuation Allowance	(6,092,000)	(4,631,000)
Deferred tax asset	$ 1,504,000	$ 1,504,000