Note 7 - Income Taxes (Details Textual) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%
Effective Income Tax Rate Reconciliation, Percent, Total	9.00%	9.00%
Domestic Tax Authority [Member] \| Pre-2018 [Member]
Operating Loss Carryforwards	$ 13.4
Domestic Tax Authority [Member] \| Post 2017 [Member]
Operating Loss Carryforwards	$ 60.7

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Topic 740
-SubTopic 10
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-Section 50
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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-Topic 235
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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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