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Note 14 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021
Effective Income Tax Rate Reconciliation, Percent, Total	3.80%	9.70%
Unrecognized Tax Benefits, Ending Balance	$ 4.6		$ 4.6
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	0.7		0.7
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 4.4		$ 4.4
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year			2018 2017 2018 2019 2020 2021
State and Local Jurisdiction [Member]
Open Tax Year			2015 2016 2017 2018 2019 2020 2021

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319

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

+ References

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-Publisher FASB
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-Topic 740
-SubTopic 10
-Section 50
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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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