Note 17 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Beginning balance	$ 6.4	$ 7.5
(Decreases) increases as a result of tax positions taken during a prior period	(0.1)
(Decreases) increases as a result of tax positions taken during a prior period		0.3
Increases as a result of tax positions taken during the current year	0.5	0.4
Decreases relating to settlement with tax authorities	0.0	(0.8)
Decreases as a result of a lapse of the applicable statute of limitations	(2.1)	(1.4)
Increases as a result of foreign currency fluctuations	0.0	0.4
Ending balance	$ 4.7	$ 6.4

Amount of unrecognized tax benefits.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
-URI http://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Paragraph 15A
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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