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Note 8 - Income Taxes Concept (Details Textual) - USD ($) $ in Thousands	12 Months Ended			24 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2020
Income Taxes Paid		$ 4,500	$ 7,900	$ 7,900
Tax Credit Carryforward, Amount	$ 300		400	300
Deferred Tax Assets, Valuation Allowance	390	462		390
Unrecognized Tax Benefits	704	754	808	704	$ 878
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	600	600		600
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 200	$ 200	$ 200	$ 200
Open Tax Year	2018 2019 2020 2021 2022 2023

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

+ References

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Tax year that remains open to examination under enacted tax laws, in YYYY format.

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- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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