Note 8 - Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Balance	$ 233.9	$ 249.5
Balance, accumulated impairment losses	(40.8)	(41.7)
Balance, net	193.1	207.8
Divestiture	(1.7)
Foreign currency fluctuations	(13.9)	14.4
Foreign currency fluctuations, accumulated impairment losses	(0.9)	1.7
Foreign currency fluctuations, net	(13.0)	12.7
Balance	249.5	235.1
Balance, accumulated impairment losses	(41.7)	(40.0)
Balance, net	$ 207.8	$ 195.1

The change to the recorded value of accumulated impairment losses for foreign currency translation adjustments.

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The change to the recorded net goodwill for foreign currency translation adjustments.

+ References

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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