Note 9 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 131,000	$ 709,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 31,000	$ 31,000
Open Tax Year	2018 2019 2020 2021 2022 2023
Domestic Tax Jurisdiction [Member]
Operating Loss Carryforwards	$ 35,500,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 56,700,000