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Note 12 - Fair Value Measurements (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Payment for Contingent Consideration Liability, Financing Activities	$ 2.5	$ (0.0)	$ (0.0)
Debt Instrument, Fair Value Disclosure, Total	271.2
Debt and Lease Obligation, Total	267.6	$ 308.5
Gaomei [Member]
Payment for Contingent Consideration Liability, Financing Activities	$ 2.5

X

- Definition

Amount of short-term and long-term debt and lease obligation.

+ References

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- Definition

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