Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Effective Income Tax Rate Reconciliation, Percent	20.60%	21.10%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
Operating Loss Carryforwards	$ 0		$ 0
Open Tax Year	2020 2021 2022 2023

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

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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Tax year that remains open to examination under enacted tax laws, in YYYY format.

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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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