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Note 9 - Income Taxes Concept (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes Paid	$ 4,500	$ 7,900	$ 6,200
Tax Credit Carryforward, Amount	400	600
Deferred Tax Assets, Valuation Allowance	462	481
Unrecognized Tax Benefits, Ending Balance	754	808	878	$ 1,130
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	600	700
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 200	$ 200	$ 200

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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X

- 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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-Publisher FASB
-Name Accounting Standards Codification
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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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- Definition

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.

+ References

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

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